Posts

Showing posts from May, 2018
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Simple usage of LM3915 a monolithic IC with 3dB / step and 30 dB range with 10 LED drives in Bar / DOT format. I am using over here as battery level indicator.



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Industrial Electronics Instrument generally requires one or more internal FAN, AC or DC type, to cool down the internal heat, when temperature goes beyond the set temperature. In this circuit I have used a NTC as TDR to sense the temperature.



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Today I am posting the concept of Pull Up and Pull Down Circuit in off and on states and the corresponding output. A very vital circuit for ANY MCU or Digital IC inputs.



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Today i am using a small function generation IC number is ICL8038 which gives Sine, Square & Triangle wave output with controls for frequency and duty cycle adjust. Check the datasheet.



Today I am showing a small demo based on RF remote controlled power board. 20 to 25 meters control range.



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Today I am giving a small logicprobecircuitbased on opamp. A very useful tool for testingdigital logic and specially for debugging digital circuits.



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Today I am posting gates using transistors.



Compu Drive System, 27 Years as a Dynamic Player in the Field of Electronics Prototype Design and Development, we undertaking innovative project assignments solutions for Government, Corporate and Industries in India and Across Countries. CDS sphere of development starts from Home, Kitchen, Bathroom, and Office to Industrial Automation Process, applying almost three decade of Expertise and Experience in Electronics, Micro-Controllers, and Mechatronics with in-depth usage of trendy Sensors. The entire process of building the product from Conceptual Design, R&D, Schematic Design, PCB Design, Mechanical Work, PCB Assembly, MCU Embedded Programming, PC interface & Developing Smartphone Application to the first prototype product formation is all done in house. Our Domain area of Prototypes are based on IoT (Internet of Things), GPS / GSM, Bluetooth, NFC, RF, Mixed Sensors, Robotics, Bio-Medical Instruments & Applications, Analog & Digital Circuit Design, Micro SMD Circuits,…
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A 2 bit binary comparator circuit to find out A > B, B > A and A = B.



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It's a simple inverter  circuit with a normal step down transformer used in reverse to step up the voltage.



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A new circuit based 16 key encoder circuit, a very useful circuit.



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A small circuit based 555 in monostable mode.



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Hello! Do You LOVE -- REMOTE OPERATED HOME APPLIANCE -- here is a small and useful circuit to control any LOAD of course based on relay capacity.



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A small model to understand Push Pull Circuit with Controlled Duty Cycle Using PNP Transistor.



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a small circuit, based on LM35 temperature sensor, it works as set temperature indicator.



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It's a wonderful application of Shunt Voltage Reference, LM4041 or LM431 can be used to check battery Voltage Level.



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A small and interesting Musical Keyboard circuit based on ATMEL 89C52 MCU with a TDA810 old Audio Amp. IC. The Frequencies I have used is to generate Indian Classical Notes, names Sa Re Ga Ma Pa Dha Ne Sa.





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A wonderful application of LM317 variable voltage regulator with two transistor parallel connected in the output to drive a higher current.



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A Very Small and Important INPUT Logic For Various Micro-Controllers & Digital IC's.



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A Simple Battery Charging Circuit Using Solar Panel & LM317.


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Compu Drive System, 27 Years in Electronics Research and Development Arena, undertaking innovative and customized project assignments for government, corporate and industries across the globe. Developing new products (prototype design) or improving existing services or products quality in the industry is our domain area of activities. CDS sphere of development starts from home kitchen, bathroom, security, office to industry automation process, applying almost three decade of experience in electronics, micro-controllers, sensors and mechatronics. The entire process of building the product from conceptual design, R&D, schematic design, PCB design, mechanical work, PCB assembly, MCU embedded programming, PC interface / Internet of Things (IoT) Development, Smartphone application to the first prototype product formation is all done in house. We love innovative business people with innovative ideas and help quickly and efficiently visualize their ideas into new product. If YOU have an …
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A very simple and common audio mono amplifier circuit based on LM386 along with some passive components, I have used this IC in many industrial hardware application.





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A very small circuit using a FET to control intensity of a high Watt LED. This circuit i used long back to check the mark on the crank shaft in a industrial process.






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A small circuit idea on laser communication using, laser diode at the output of a single stage amp and a photo diode at the input of a single stage amp with a speaker output. Keep both the circuit at a distance only keep a track that the laser light falls on the photo diode. To get best result you can also use audio amp circuits on both the ends.





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This is Voltage testing Circuit using Lm358 Op. Amp.





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A small circuit based on 555 to control PWM of a motor and in return control the motor speed.





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A Remote Tester circuit using TSOP 1738 a simple Universal Remote Sensor, Transistor & other passive components.





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A two digit counter with count and reset switch, can have unlimited applications in industry.






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Compu Drive System, India - Kolkata, provides complete solution to electronics prototype design and development and also undertakes industrial re-engineering process to improve existing services or products quality across the globe. Feel free to Contact us. Call / whatsapp at +91 9831092629, Email - info@compudrivesystem.com, do visit our website www.compudrivesystem.com.



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Hi! Friends, a small electronics shocking circuit, be careful the output is approx 150 volts plus. It has lot of applications in industry, biomedical and of course fun.



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Hello to all my Electronics friends those who loves music, playing guitar today's circuit is specially for them. A beautiful Pocket Metronome circuit using well known IC 555 & some passive components.



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Hello friends IPL is going on so lets play cricket Electronically! Today's circuit is specially the cricket lovers & the circuit is "Digital Coin Tosser'. Using two very famous IC 555 & 4017, I hope you all like the circuit.



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A smallest sensitive temperature sensor using a NTC when the machine temperature rises, the buzzer goes on and remains on until the machine cool down.



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Tipical use of LM2003 for mulitple different load with higher load capicity.



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Using Piezo Electric & very popular IC 4017 to make a touch Switch.



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Another simple circuit for you, use of a Zener Diode & a BC548 Transistor convert 12V. DC to 9V. DC. Do it practically, you all just love it.



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A very simple & lovable circuit for those guys who loves music. UM66 is a Melody Generator IC, it has a multiple use but you can use as a simple door bell. I hope you really like the circuit & for young Engineer who loves the Electronics circuit & new idea, share your views via comments. Contact me for new Innovation or any Prototype Design, call me +91 9831092629 or visit my Website www.compudrivesystem.com.



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Hi! Everyone, see the small variation in an OP-amp used as comparator, where one can select the sensitivity of the resistive sensor like LDR/ TDR/ POT/ Force / Stretch etc. Of course the divider network will change with the sensor used. Start building these Circuits and Empower Yourself with the Treasure of Electronics.



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Hello!! here is a one more simple but interesting and very useful circuit to monitor 12 volt batteries. For any requirement in prototype development please contact me at +91 9831092629. Visit my website www.compudrivesystem.com.


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My best friendly 8051 development board I am using since more then a decade, in which I have programmed more then 10,000 plus assembly language programs for my creativity and prototype development job works. Today I using almost 5 development boards for my workout like Arduino's, TI, Raspberry's, PIC, ARM. So for any business inquiry related to core analog electronics design, digital electronics, micro-controller based design and development, PCB, PCBA, Android based development Call / Whatsapp me at +91 9831092629 or visit my company website www.compudrivesystem.com. Compu Drive System is a one stop solution in prototype design and development globally.


Just see a nice video of 20 meters wireless RF transmitter and receiver circuit which can be used for more than 10,000 applications.



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RF Transmitter and RECEIVER Circuit.




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Hello my dear friends, A small prototype of ultrasound distance measurement project, now i am modifying the circuit with laser to measure distance and temperature together.




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SCR working in AC



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To put on the bulb S2 switch must ob on and press once S1. to put it off press S2 off.



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One more circuit, stand alone PROM, EPROM copier with blank check and compare facility. In this circuit I am using a 12 bit address generator IC 4040 with 74245 8 bit transceiver IC but used as uni direction only. You can use any 8 bit unidirectional control latch like eg. 74373 etc. To compare the data i am using 74688. Now you can use your concepts for increasing the address bit, getting the output lateched etc.



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Small wireless transmitter circuit with MIC.



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That is Vibration Sensor Circuit, to detect mechanical vibration.



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A three channel audio mixer if you want R1..R3 change with 100K variable to adjust different Inputs levels.