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  • DPM Digital Panel Meter (ICL7107)

    2015-01-18 08:30:12102

    This article describes the DPM Digital Panel Meter (ICL7107). The content is very simple, very helpful. Components in this article can help you underst...

  • New Three Axis Digital Accelerometer(ADXL312)

    2015-01-18 07:28:2787

    This article describes the New Three Axis Digital Accelerometer (ADXL312). The principle is very simple, very practical. The circuit components can hel...

  • Basic digital thermometer

    2015-01-18 07:25:0088

    The Kelvin scale version reads from 0 to 1999 ?°K theoretically, and from 223 ?°K to 473 ?°K actually The 26 K resistor brings the input within the ...

  • Touch Motor Control by SCR and Schmitt Trigger

    2015-01-18 07:08:14100

    This circuit designs for control DC Motor 12Volt. By use the touch once Motor as a result turn go to once. When use a finger touches the metal makes Sc...

  • Digital voltmeter (DVM) circuit (BC327)

    2015-01-18 06:24:33136

    This article describes the Digital voltmeter (DVM) circuit (BC327). The content is very simple, very helpful. Components in this article can help you u...

  • LM324 Active Bandpass Filter Circuit Diagram

    2015-01-18 06:04:45395

    What you will see in the following schematic diagram isActive Bandpass Filter Circuit using LM324 Low Power Quad Operational Amplifier. Thisactive band...

  • Digital Signals Decoding Interfaces CIRCUIT (TL074)

    2015-01-18 04:27:23225

    This article describes the Digital Signals Decoding Interfaces CIRCUIT (TL074). The principle is very simple, very practical. The circuit components ca...

  • Dual Direction Digital Ping-Pong by 555 Timer

    2015-01-18 04:02:1885

    Figure 1 The circuit was designed to create a game of ping-pong with a double direction of flashing lights. Ping Pong – a sport that represents anoth...

  • Filter carrier with narrow bandwidth circuit diagram

    2015-01-18 03:53:2977

    Radio Circuits A filter carrier with narrow bandwidth can be designed using this circuit diagram. This filter is constructed from standard components a...

  • Subsonic Filter for Phono preamps and Sub-Woofers (TC4427VOA

    2015-01-18 03:50:06159

    This article describes the Subsonic Filter for Phono preamps and Sub-Woofers (TC4427VOA). The content is very simple, very helpful. Components in this ...

  • Infrasonic and Ultrasonic Filter for High Fidelity (Hi-Fi) A

    2015-01-18 02:43:49103

    In high fidelity (hi-fi) audio system, the harmonic distortion level is kept as low as possible. To make sure that the amplifier handle the sigal perfe...

  • Using Current Source To Make Linear Scale Analog Ohm Meter

    2015-01-18 02:39:5771

    Many analog ohm meters have non linear scale, so the resolution become worse at higher resistance value. This because they use cheap current source, on...

  • Low-Pass and High-Pass RC Filter Frequency Calculator

    2015-01-18 01:48:2875

    This is a simple Low-Pass and High-Pass RC Filter Frequency Calculator. This calculator is used to calculate the corner frequency of low pass and high ...

  • Digital-touch-on-off-switch

    2015-01-18 01:03:0293

    Only one LED can be on when the circuit is at rest. Which LED is illuminated is determined by the touch pick-up that last had human contact. Pickup ter...

  • Second Order DSP Filter explained

    2015-01-18 00:20:0394

    Second order DSP filter is more complex than first order filters. There is one more delay block (z-1) added. Function diagram of second order DSP filte...

  • Digital Thermostat (LM35)

    2015-01-18 00:01:4496

    This article describes the Digital Thermostat (LM35). The content is very simple, very helpful. Components in this article can help you understand bett...

  • Differential Analog Switch

    2015-01-17 23:37:4773

    This is a circuit of differential analog switch. This circuit uses? the FM1208 monolithic dual. Here is the circuit: This circuit is ideal choice for a...

  • DX audio filter circuit

    2015-01-17 23:04:42134

    Most universal radio receivers have a very wide bandwidth that is not particulary for radio amateurs. The better models with narrower bandwith are almo...

  • Choke input-L section filter

    2015-01-17 22:38:23847

    A simple series inductor reduces both the peakand effective values of the output current and output voltage. On the other hand a simple shunt capacitor...

  • AD5273 Digital Potentiometer Datasheet and Programmable Boos

    2015-01-17 22:23:15167

    The following circuit diagram isProgrammable Booster Voltage Source of the AD5273 64-Position One Time Programmable (OTP) Digital Potentiometer. As mos...

  • Digital Isolation and Termination

    2015-01-17 22:02:25142

    This is a digital isolation and termination circuit. This circuit uses The CLT3-4 that is a digital termination device with quadruple input. The CLT3-4...

  • Amplitude Modulation and Superheterodynes

    2015-01-17 21:48:39159

    Modulation We briefly encountered the balanced modulator as a phase detector for phase-locked loops. This circuit is worth further attention, since it ...

  • Frequency Source with Digital Control (TDA7274)

    2015-01-17 21:42:0670

    This article describes the Frequency Source with Digital Control (TDA7274). The content is very simple, very helpful. Components in this article can he...

  • 4.5Mhz notch filter

    2015-01-17 21:12:3266

    Component value sensitivityis extremely critical, as are temperature coefficients and matching of the components. Best performance is attained when per...

  • Bandpass Filter for Bell103A Originator Modem (MC1458)

    2015-01-17 20:51:52101

    Bell103A modem standard specify that the originator (the caller) uses 1070Hz and 1270Hz frequency shift keying for transmission, and listen for 2025/22...

  • Digital Roulette Circuit with 7-Segment Display

    2015-01-17 20:36:41113

    Figure 1 The circuit was designed to produce a digital roulette that will display the result using a 7-segment LED display. Roulette – refers to a ga...

  • CD4067 IC For Digital Volume Control Circuit

    2015-01-17 19:38:44621

    Description: The following circuit shows a digital volume control circuit diagram. This circuit based on the IC CD4067. Features: IC1 (555) as a flip-f...

  • Single Op-Amp Twin-T Band-Pass and Notch Filter (1N4006)

    2015-01-17 19:07:11132

    This article describes the Single Op-Amp Twin-T Band-Pass and Notch Filter (1N4006). The content is very simple, very helpful. Components in this artic...

  • Low-Drift High-Impedance JFET DC Voltmeter

    2015-01-17 19:03:15104

    The voltmeter shown in the schematic diagram below has very high impedance. The range selector uses conventional voltage divider resistors, but since t...

  • Digital Multiple-Gang Potentiometer Control Circuit

    2015-01-17 18:49:3770

    A 555 timer can be configured to simulate a multi-gang potentiometer by controlling the mark-space ratio. The switching rate should be at least twice t...

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