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Basic Function Circuits

LT1016 – LS74121 Voltage Controlled Pulse Width Generator/ Monostable Multivibrator

October 8, 2012

Mono-stable multivibrator circuit generates a fixed pulse width when receiving a trigger signal on its input. The pulse width of […]

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Wien-Bridge Oscillator Using HA2541 Op-Amp

November 13, 2011

Analog Multiplier-Divider with 4136 Op-Amps

October 24, 2011

Square Root Mode for AD532 Analog Processor

August 14, 2011

Data Communication

Interfacing High Power Load to Logic Level with Optocoupler

December 10, 2011

Interfacing high power load can be done in many ways, such as using voltage divider resistors, transformer, or optocoupler.  In […]

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Three Wire RS232 To RS485 Converter

October 28, 2011

30-Khz Bandwidth High Linearity Opto-Isolated Amplifier

October 13, 2011

Pulse Width to Analog Voltage Demodulator

March 25, 2011

Testing and Measurement

PC (Audio) Signal Generator Using RS232 Port

April 26, 2013

Using an RS232 port, we can generate square wave oscillation when transmitting data, and this can be “misused” as signal […]

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LT1016 – LS74121 Voltage Controlled Pulse Width Generator/ Monostable Multivibrator

October 8, 2012

Simple Continuity Tester with Classic Flip-Flop Circuit

April 17, 2012

Low-Drift High-Impedance JFET DC Voltmeter

February 6, 2012

Control and Monitoring

Touch Sensitive RS Flip-Flop Using OP-AMP

May 8, 2013

This RS flip-flop is op-amp version of classic flip-flop which uses two inverting amplifier. The non-iverting input is floating, and […]

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Missing Pulse Detector Circuit with 555 IC

September 3, 2012

Sound-Activated Lamp (Relay/Switch)

October 1, 2011

Digital Encoder Circuit Using Stepper Motor

September 17, 2011

Power Supplie Circuits

5 A Constant Voltage-Constant Current Regulator

December 13, 2012

A constant voltage constant current  (CVCS) regulator  doesn’t mean a system with a constant load, since there will be no […]

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Fast Charger for Better Lead-Acid Battery Life

November 20, 2012

TLC497CN Negative Supply Generator

June 3, 2012

Three Cells Produce Regulated 3V – 3.3V with Power Down/Power Saving Mode

April 30, 2012

RF and Video Circuits

Voltage Controlled Variable Gain Video Amplifier

February 5, 2013

For you those are not familiar with analog circuits, it might seem difficult to find a practical  application of analog […]

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Double-Sideband Suppressed-Carrier (DSB-SC) Modulator

January 23, 2012

LM1201 Video Amplifier with Balanced (Bi-Phase) Output

January 2, 2012

Wideband Buffer using FET and Bipolar Transistor

September 10, 2011

Circuit Diagram Search

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  • Pinout (2)
  • Power Supply (132)
  • RF and Video (67)
  • Security (7)
  • Testing and Measurement (134)
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