Showing posts with label and. Show all posts
Showing posts with label and. Show all posts
Wednesday, November 12, 2014
ic NE 555 Timer IC Datasheet Applications and Circuit Schematics
NE-555 timer IC was being introduced around May 1971 by the Signetics Corporation, to become known as the NE-555 / SE-555, and was also the very first very mass-produced commercially produced timer IC available at that time. Philips semiconductor was then introduced this 555 timer in mid 1972. Its characteristics for versatility, stability, low cost, simplicity to produce long time delays in a variety of applications, make Electronic Engineers, Circuit Designers from mechanical timers, op amps, and various discrete circuits into the ever increasing ranks of timer users.
Invented by a clever Swiss man, Hans R. Camenzind in 1970, the NE-555 timer IC went on to become a legend in the industry. As we already know, the 555 timer operates in three basic mode: monostable (one shot), astable (oscilatory), and time delay. In the article below each of basic operating mode were described detailly in one sequence with its schematic diagrams.
Another sections you can follow in this datasheet applications are general design consideration of the 555 timer, frequently asked applications question (FAQ), design formulas, and sample of some ingenious applications. The sample of applications were presented such as Missing Pulse Detector, Pulse Width Modulation (PWM), Tone Burst Generator, Long Time Delays, Car Tachometer (click to enlarge the picture above), Auto Burglar Alarm, Cable Tester, Automobile Voltage Regulator, and more. Each sample is given with clear and detail circuit schematic diagrams.
The article is ended with Theory of Operation and The Speed Warning Circuit section. Read on complete information about The NE 555 Timer IC Datasheet Applications and Circuit Schematics with link to download in pdf document provided (source: doctronics.co.uk).
Monday, October 13, 2014
LM35 Digital Remote Thermometer circuit and explanation
Receiver Module Functional
LM35 (Linear temperature sensor IC) through a power amplifier and voltage change as a form of high frequency. To signal through the AC power cord.
For the receiver circuit and display module will receive the high frequency AC power cord and decode out to be the actual temperature figures with digital IC No. CD4553 Three-digit BCD Counter IC) and IC-CD4511 (BCD-to-7-Segment Latch / Decoder / Driver IC).
Electronic Part List
Receiver Module
R1 100K 1/4W
C1,C2 47nF 400V
R2 1K 1/4W
C3,C7 1nF 63V
R3,R4,R6-R8 12K 1/4W
C4 10nF 63V
R5 47K 1/4W
C5,C6,C10 220nF 63V
R9-R15 470R 1/4W
C8 1000uF 25V
R16 680 1/4W
C9 100pF 63V
D1,D2,D5 1N4148
D3,D4 1N4002
D6-D8 Common-cathode 7-segment LED mini-displays
IC1 403
IC2 4518
IC3 78L12
IC4 4017
IC5 4553
IC6 4511
Q1 BC239C
Q2-Q4 BC327
L1 Primary (Connected to C1 & C2): 10 turns
Secondary: 100 turns
Wire diameter: 0.02mm. enameled
Plastic former with ferrite core. Outer diameter: 4mm.
T1 220V Primary, 12+12V Secondary 3VA Mains transforme
Remote Module Functional
The frequency pulses from the wall and safely isolated by C1, C2 and L1 are amplified by Q1, diodes D1 and D2 of the peak limit his admission. The pulses are filtered by C5, IC1b square, divided by 10 in IC2B and sent for final countdown clock input of IC5. IC4 is the time base generator: it provides IC1b and reset pulses to the making and IC5 locks and opening time of IC5 at 1Hz frequency. It is powered by a 5Hz square wave obtained from the frequency 50Hz sector Retrieved from T1 secondary, squared and divided by 10 in IC1C IC2A. IC5 readers across the cathodes scenes Q2, Q3 and Q4 with a rate determined by frequency multiplexing C7. Readers also shows three anodes in parallel by the BCD to 7 segments decoder IC6. In summary, the input pulse power on, say, 2kHz frequency be divided by 10 and displayed as 20.0 ° C
Remote Circuit
Remote Module
R1,R3 100K 1/4W
C1 220nF 63V
R2 47R 1/4W
C2 10nF 63V
R4 5K 1/2W Trimmer Cermet
C3 1uF 63V
R5 12K 1/4W
C4,C6 1nF 63V
R6 10K 1/4W
C5 2n2 63V
R7 6K8 1/4W
C7,C8 47nF 400V
R8,R9 1K 1/4W
C9 1000uF 25V
D1 1N4148
IC1 LM35
D2,D3 1N4002
IC2 LM331
D4 Red LED
IC3 78L06
Q1 BC238
Q2 BD139
L1 Primary (Connected to Q2 Collector): 100 turns
Secondary: 10 turns
Wire diameter: 0.02mm. enameled
Plastic former with ferrite core. Outer diameter: 4mm.
T1 220V Primary, 12+12V Secondary 3VA Mains transformer
Friday, September 19, 2014
Simple and hold circuit using op amp Circuits Wiring diagram
As the name indicates , a sample and hold schema is a schema which samples an input signal and holds onto its last sampled value until the input is sampled again. Sample and hold diagram are commonly used in analogue to digital converts, communication diagram, PWM diagram etc. The schema shown below is of a sample and hold schema based on uA 741 opamp , n-channel E MOSFET BS170 and few passive components.
Description
As the name indicates , a sample and hold schema is a schema which samples an input signal and holds onto its last sampled value until the input is sampled again. Sample and hold diagram are commonly used in analogue to digital converts, communication diagram, PWM diagram etc. The schema shown below is of a sample and hold schema based on uA 741 opamp , n-channel E MOSFET BS170 and few passive components.
In the schema MOSFET BS170 (Q1) works as a switch while opamp uA741 is wired as a voltage follower. The signal to be sampled (Vin) is applied to the drain of MOSFET while the sample and hold control voltage (Vs) is applied to the source of the MOSFET. The source pin of the MOSFET is connected to the non inverting input of the opamp through the resistor R3. C1 which is a polyester capacitor serves as the charge storing device. Resistor R2 serves as the load resistor while preset R1 is used for adjusting the offset voltage.
During the positive half cycle of the Vs, the MOSFET is ON which acts like a closed switch and the capacitor C1 is charged by the Vin and the same voltage (Vin) appears at the output of the opamp. When Vs is zero MOSFET is switched off and the only discharge path for C1 is through the inverting input of the opamp. Since the input impedance of the opamp is too high the voltage Vin is retained and it appears at the output of the opamp.
Circuit diagram
Sample and Hold schema using uA741 opamp
Input and output waveforms.
Input and output waveforms - Sample and hold schema
Notes
- The schema can be assembled on a vero board.
- Use +15V/-15V DC dual supply for powering the opamp.
- Capacitor C1 must have minimum leakage current possible and thats why a polyester capacitor is used here.
- Mount the IC uA741 on a holder.
- The type number of the MOSFET Q1 is not very significant here and so substitution is possible if BS170 is not available.
- BS170 is a 60V, 500mA n-channel enhancement mode MOSFET available in TO-92 package.
- Preset resistor R1 can be used for offset adjustments.
Monday, September 8, 2014
Technology Spending Limits and the Auto Sound System
We live in a world that is constantly changing and evolving. We see it every time we buy a new car, a new television, or a new computer. We see it every other month when the iPod is putting out a new an improved model that offers more features, more disk space, and more everything, in a smaller package (well not since they added video but until then, the gadgets were getting smaller while the features were growing exponentially). The truth of the matter is that technology seems to be advancing at a rate that is nearly impossible to keep up with. That being said, you can quite literally drive yourself insane by trying to keep up with the pace of modern technology.
What you need to do in order to maintain proper sanity is decide on a level of technology that you are comfortable and confident with and go with it until it is time (by either necessity or desire) to upgrade. You do not have to be the first to purchase the latest and greatest in software and gadgetry (this has become my mantra: I do not have to be the first to own the great big bad new toy, I will survive gadget deprivation-it isnt working yet but Im ever the optimist). The point is that you do not need to be the first to try every new thing and you will not only wear yourself out by trying but also you bank account, credit cards, and second mortgage. Technology is expensive, especially the newest and latest. If there was any doubt stroll on over to Ebay and see how much Play Station 3s are selling for at the moment-madness and lunacy do not even begin to subscribe the amount of money people are offering to pay for these devices.
Technology is a wonderful thing. It makes life easier for some and a lot more entertaining for others. The same holds true with auto sound systems. The technology exists to make them much more beneficial to car and driver than they have been in the past while offering many more features than ever before. Today you arent even limited to AM and FM. You now have the option of CDs, audio books, MP3s, XML, and digital FM radio, which offers a few bonus features over traditional radio. It really doesnt matter if you have the absolute latest. Most of us can enjoy a great deal of the wonderful technology that is available if we are willing to wait long enough for the prices to go down. I recall, and it wasnt all that long ago, when DVD players sold for no less than $100. You can get them now (about 5 years later) on a regular basis for less than $30. This is only one example of many. PS2s were around $400 when they first hit the market and now can be bought at the whopping price of $120. All around us technology evolves and grows and then prices fall.
The point is spend your money where you want to spend it rather than where you think it should be spent. If you want an auto sound system then get the best one that you feel meets your budget requirements. You do not have to have the top system in the technology food chain in order to have a great sound system that will provide you with years worth of enjoyment. You are the only one that is responsible for the decisions you make. It is up to you to decide where you want the bulk of your money invested when it comes to technological gadgets and goodies. Believe me, Im a gadget geek. I love playing with new toys and gizmos and seeing how they work-really, for me its a thrill. At the same time I realize I cant always be the first to get the new toys I so desperately want to try out so I limit myself and decide which ones are the most important. You must do this for yourself when it comes to auto sound systems.
Saturday, August 30, 2014
Super High Power Portable TV and FM Jammer Wiring diagram Schematic
This is the Super High Power Portable TV and FM Jammer Circuit Diagram. There are still neighbors that keep annoying you by having loud the TV or the radio? Well I have you the solution. In fact all neighborhood will face your jamming waves at their TVs and radios, so be careful.
This Jammer is the improved version of the old `TV and FM jammer schematic` with the difference of much higher power. Many of you where asking for a stronger and wider effect but to be as portable as can be. Looking at the schematic you can see that, only the parts are changing keeping the basic schema intact. Have in mind that this version needs heat sink and antenna to keep the transistor alive.
Super High Power Portable TV and FM Jammer Circuit Diagram
The power source comes from three 9 volt batteries in series, so we use 27 volts at input, and we get a power full 2,5 Watts at output.
You are going to need 70cm to 2 meter simple wire antenna.
As for the transistor Q its the 2N3553. Its a RF Power Silicon NPN Transistor in a TO39 type package designed to be used in amplifiers and oscillator applications in military and industrial equipment.
Usually found as an output driver, or in predriver stages in VHF equipment, but because here we dont care about the modulation of the signal but just the power, thats why we use it as a first and final output driver.
The transistor is specified at 175MHz and 28V to give: Output Power: 2.5W, Minimum Gain: 10dB and Efficiency: 50%.
The parts are: R1=10k, R2=2,2K, R3=100 C1=47uF/50V, C2=2.2nF, C3=10pF, SW=switch, B=Battery 9V.
The coil L should be closely wound 5 turns (start tunning with the closely wound distance of turns and then play with it and the C4 capacitor, to find the desired frequency )of enameled copper wire 1.5mm and internal coil diameter of 1cm (leads 2x20mm).
The variable capacitor C4 should be air trimmer capacitor rating 4 to 30 pf or the closest to this value.
Connect the batteries in series place the best heat sink for TO39 case you can get and pack it all in a small plastic box. Enjoy ;)
Datasheet file1: Click here to download 2n3553 datasheet.
Friday, August 29, 2014
LM4651 and LM4652 170W power amplifier
170 Watt power amplifier is a power amplifier that is built by IC LM4651 and LM4652.
Part of this power amplifier driver using the LM4651 IC designed specifically for the purpose of the class AB amplifier driver with short circuit protection feature, containing under voltage, thermal shutdown protection and standby functions. Section 170 Watt power amplifier using LM4651 IC with a MOSFET power amplifier is equipped with temperature sensors that will be used by IC LM4651 as controlnya thermal signal. IC IC LM4651 and LM4652 are designed specifically to each other in pairs to create a class AB power amplifier with protection features are detailed. Detailed series of 170 Watt power amplifier can be seen in thethe following figure .
![LM4651]()
Power amplifier circuit requires supply voltages +22 V DC symmetrical 0-22V. Power Amplifier with IC LM4651 and LM4652 are often used in portable HiFi systems such as powered speakers, power subwoofer and car audio power Booter. D1, D2, D3 and D4 in series 170 watt power amplifier with LM4651 and LM4652 is a 22V zener diode.
Read More..
Part of this power amplifier driver using the LM4651 IC designed specifically for the purpose of the class AB amplifier driver with short circuit protection feature, containing under voltage, thermal shutdown protection and standby functions. Section 170 Watt power amplifier using LM4651 IC with a MOSFET power amplifier is equipped with temperature sensors that will be used by IC LM4651 as controlnya thermal signal. IC IC LM4651 and LM4652 are designed specifically to each other in pairs to create a class AB power amplifier with protection features are detailed. Detailed series of 170 Watt power amplifier can be seen in thethe following figure .
Power amplifier circuit requires supply voltages +22 V DC symmetrical 0-22V. Power Amplifier with IC LM4651 and LM4652 are often used in portable HiFi systems such as powered speakers, power subwoofer and car audio power Booter. D1, D2, D3 and D4 in series 170 watt power amplifier with LM4651 and LM4652 is a 22V zener diode.
Thursday, August 28, 2014
TERUMO TE331 TE332 Terufusion Syringe Pump E2PROM INITIALIZE and AGING
TERUMO TE-331 – TE332 Terufusion Syringe Pump. How to initialize E2PROM.
Medical (Electronic) Equipment.
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E2PROM INITIALIZING
RAM data is erased and E2PROM is refreshed by ROM data [default data at factory]. This operation resets all the settings to the default. Readjust required.
- Set the internal DIP switches 1 and 2 to ON and OFF respectively.
- While holding down the [STOP] switch, press the On/Off switch. The display first shows “888.8”, then “FACt”, and a short beep follows. Release the switches and check the display has changed to “”dIAg”; which stands for Diagnosis. Note: If you press the On/Off switch without pressing the Stop switch “Er91” appears on the 7 segment display. Turn off the pump, and repeat the procedure above. If you do not release the switches at the beep, the display changes to ‘Er 8”. Once ‘Er 8’ appears, you have to turn off the pump, and repeat the procedure above.
- When “dIAg” is displayed, press the Display Select switch 3 times. Check the display shows “CLEA” which stands for clear.
- Press ‘Stop ‘switch, and the display shows “E or J”. E is for Europe, and J is for Japan.
- Press and hold PURGE’ switch about 1.5 seconds to choose ‘E for Europe’.
- Initialization of E2PROM starts. The display changes to ‘Eur’. As the initialization proceeds, first “0 “, then “00 “,and “000 “, lastly “0000” appears on the display.the switch for Japan is the Start. If the Start switch is pressed, “JP” appears on the display.
- When successfully completed, can hear a short beep and see the display of “good”.
- In case of failure, “bAd” is displayed. Then the display returns to “CLEA”.
- Press On/Off switch to Exit the initializing E2PROM mode.
- Set the DIP switches 1 and 2 to On and Off, respectively.
- While holding the Stop switch, press On/Off switch. The display first shows “888.8”, then “FACt” and a short beep follows. Release the switches and check the display has changed to “dLAg” which stands for Diagnosis. Note: If you press the On/Off switch without pressing the ‘Stop’ switch “Er91” appears on the 7 segment display. Turn off the pump, and repeat the procedure above. If you do not release the switches at the beep, the display changes to “Er 8”. Once “Er 8” appears, you have to turn Off the pump and repeat the procedure above.
- When “dIAG” is displayed, press the Display Select switch 4times. Check the display shows “Aging”, which stands for Aging.
- Press Start switch, and Aging starts.
- When completed, press the On/Off switch to Exit the Aging Mode.
* Motor rotates [slider moves approximately 9mm/h].
* All LED elements connected flash at 1 Hz / 50% duty.
* While the motor is rotating the minimum purge sound comes out.
Attention: You can stop aging at any time by pressing the ‘Stop’ switch, and start again by pressing the Start switch.
* The motor stops if occlusion is detected with the load on the slider at approx. 4606N=4.7kgf.
14 V battery charger circuit and troubleshooting
This circuit is also use operational amplifier IC LM324 to drive the VN64GA with the error signal and to control output voltage. This output voltage is pulsating DC , which is quite satisfactory for battery charging. This circuit also can be converted to the system regulated DC supply.
You do this by increased C2 and anoother electrolytic capacitor is added across the load. The respon time is very fast, determined by the op amp.
Schematic and troubleshooting below :
- AC cable disconnected
- Transformer is damaged or leaking.
- Broken or leaky diode.
- Installation of inverted foot elco.
- Instrallation of the components of the upside , particularly on the transistor , examine the placement of the feet emitter , collector and base.
- IC damaged.
- Soldering is less sticky.
- Line PCB damaged.
Tuesday, August 26, 2014
Adapter power supply and charger circuit
Basically adapter, power supply and charger circuit has a similar construction which consists of a transformer, rectifier (rectifier) and smoothing the voltage. For there is usually an additional power supply voltage stabilizer of voltage regulator IC LM series 78XX or 79XX .
Below is a schematic circuit adapter, power supply, or battery charger (for gadgets, mobile phones, MP4player, smartphone) that is equipped with a 5V voltage stabilizer:
| Adapter, power supply and charger circuit |
Monday, August 25, 2014
Mini and simple power amplifier circuits
What is the meaning of the picture above? The above picture is a miniature audio amplifier and very simple. Here I will give an audio amplifier schematic is very simple which only requires a few components only, can be seen under this scheme.
See from above scheme may occur to you, certainly cheap enough to make this amplifier and quite easy to make. The above simple audio amplifier circuit using an IC as the main amplifier and accompanied by other components. IC used is S1513, which requires a supply voltage ranging from 1.5 volts to 6 volts. And only 0.1 W output power with 4 ohm impedance. For a list components can be seen below.
Part list
C1 = 100nF
C2 = 100uF
C2 = 100uF
C3 = 3n3F
C4 = 1uF
C5 = 1uF
U1 = S1513
C5 = 1uF
U1 = S1513
Differences subwoofer and woofer speakers
In the world of electronics, especially in terms of audio must be familiar with the term speaker, be it a woofer or subwoofer. Each of these types of speakers choose a variety of characteristics and differences. Here will be explained a little about subwoofe speakers and woofer speakers, so we can find out where the fine for use as needed.
| Subwoofer Speaker |
Subwoofer is a bass speaker system yangg could produce a lower frequency than usual with an additional woofer low pass filter.Walaupun sub-woofer does not have to wear two opposite poles mounted speakers, a good sub-woofer is that using 2 woofers for the volume remains loud. Sub woofer with the woofer does not always have a special, because ordinary woofer can be built into the subwoofer, by adding an amplifier low pass filter. Sound system (sound system) even if only to include a sophisticated subwoofer, along with some other speakers.
And in other words, the difference in bass speaker (woofer) with speaker Sub Woofer:By description SUB word, it means the speaker must be able to handle bass tones below.
Bass speakers can use the speakers with her without a rubber edge cones.
Speaker Sub Woofer, using cones with rubber edges, so its more flexible movement of cones.
Performance of all speakers (tweeter, Middle, woofer or sub woofer) strongly depends on the source signal and Pre Amp and Power of his amps. So if not supported by all three of these factors, it will not produce a good tone (tone control).
Regarding his Ohm, 100%, depending on its output amps.
Like the amps in the car, the output is 4 ohms, while the home is generally 8 ohm amp, but there is also a distinguished 16 ohms. So adjust the speakers to the amplifier.
So the key difference lies in the low tones (bass) are produced. Subwoofers capable of producing a low tone below the average normal woofers, and the tone is also more melodic and soft . So what can I share, may be useful to visitors all. Thank you
Sunday, August 24, 2014
Simple Voltage controlled current source with grounded source and load
This is a Simple Voltage controlled current source with grounded source and load. This is a simple, precise voltage-controlled current source. Bipolar supplies will permit bipolar output. Configurations featuring a grounded voltage- control source and a grounded load are usually more complex and depend upon several components for stability.Voltage-controlled-current-source-with-grounded-source-and-load. In this schema, accuracy and stability almost entirely depend upon the 100-0 shunt.
Voltage controlled current source schema diagram
Sourced by : Simple Voltage controlled current source with grounded source and load
Friday, August 22, 2014
2SC5200 and 2SA1943 high fidelity power transistor
Here are two transistors manufactured by Toshiba. 2SC5200 and 2SA1943 transistor pair has been widely applied or used in the amplifier power amplifier because the transistor has a large power, and also not too expensive than other large power transistors. This transistor has the advantage of High breakdown voltage: VCEO = 230 V (min), Suitable for use in 100-W high fidelity audio amplifiers output stage. For more information, please see datasheet below.
Maximum Ratings (Tc = 25°C)
Monday, August 18, 2014
Simple Positive And Negative Voltage Power Supply Wiring diagram Schematic
This Simple Positive And Negative Voltage Power Supply Circuit Diagram provides a precision voltage source that can be adjusted through zero to positive and negative voltages, which eliminates reversing connections on the power supply. Also, it is possible to get exactly 0 V, without some offset. As to how this schema works, first consider the -1 V/V to +1 V/V linear gain-control amp (see the figure). A Burr-Brown INA105 difference amp is used in a unity-gain inverting amp configuration.
Positive And Negative Voltage Power Supply Circuit Diagram
A potentiometer is connected between the input and ground. The pot`s slider is connected to the noninverting input of the unity-gain amp; this input is typically connected to ground. With the slider at the bottom of the pot, the schema is a normal-precision unity-gain inverting amp with a gain of -1.0 V/V ± 0.01% maximum.
With the slider at the top of the pot, the schema is a normal-precision voltage follower with a gain of ± 1.0 V/V ± 0.001% maximum. With the slider in the center, there`s equal positive and negative gain for a net gain of 0 V/V. The accuracy between the top and the bottom will usually be limited by the accuracy of the pot.
Source Simple Positive And Negative Voltage Power Supply Circuit Diagram
Source Simple Positive And Negative Voltage Power Supply Circuit Diagram
Sunday, August 17, 2014
1962 Mercury 6 and V8 Meteor Wiring Diagram
Now see the wiring diagram for the 1962 Mercury 6 and V8 Meteor. This schematic will tells us about the wiring system of the 1962 Mercury 6 and V8 Meteor.
Read More..
 |
1962 Mercury 6 and V8 Meteor Wiring Diagram |
Some parts youre gonna see here are like: light switch fuse block, oil pressure gauge, instrument light, direction signal switch, horn button, blower switch, cigar lighter, windshield wiper switch, temperature gauge, ammeter, door switch, etc. See also some colors codes that refer to the different cable color or connections.
Saturday, August 9, 2014
SONY HCD EX660Z SCHEMATIC Wiring diagram Schematic SMPS and AMPLIFIER
SONY HCD-EX660Z
Russian Model HCD-EX660Z/EX990Z
E Model HCD-EX660Z/EX880Z/EX990Z
Mexican Model HCD-EX880Z/EX990Z
South African Model HCD-EX660Z
SCHEMATICS [Click on the Circuit Diagrams to Zoom In]
PWB
Power Amp Circuit & PWB
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