http://www.simplecircuitdiagram.com Free Simple Circuit Diagram Mon, 06 Feb 2012 04:23:39 +0000 en hourly 1 http://wordpress.org/?v=abc http://www.simplecircuitdiagram.com/2011/10/28/voltage-to-frequency-converter-using-ujt/ http://www.simplecircuitdiagram.com/2011/10/28/voltage-to-frequency-converter-using-ujt/#comments Fri, 28 Oct 2011 12:08:50 +0000 Rust http://www.simplecircuitdiagram.com/?p=2713 The following voltage to frequency converter (V/FC – VCO) circuit consist of a UJT (uni-junction transistor) oscillator in which the timing charge capacitor C2 is linearly depends on the input signal voltage. The voltage across resistor R5 set the charging … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/10/28/voltage-to-frequency-converter-using-ujt/feed/ 0 http://www.simplecircuitdiagram.com/2011/10/13/programmable-capacitance-multiplier-with-dac/ http://www.simplecircuitdiagram.com/2011/10/13/programmable-capacitance-multiplier-with-dac/#comments Thu, 13 Oct 2011 01:42:50 +0000 Rust http://www.simplecircuitdiagram.com/?p=2704 Capacitance multiplier simulate high capacitance capacitor for analog signal signal processing. By using DAC (Digital-to-Analog Converter), we can simulate variable capacitance with very wide range, which can be used in digitally controlled analog processor (programmable filters for example). The following … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/10/13/programmable-capacitance-multiplier-with-dac/feed/ 0 http://www.simplecircuitdiagram.com/2011/10/01/fuzz-box-distortion-pedal-guitar-effect/ http://www.simplecircuitdiagram.com/2011/10/01/fuzz-box-distortion-pedal-guitar-effect/#comments Sat, 01 Oct 2011 12:12:23 +0000 Rend http://www.simplecircuitdiagram.com/?p=2701 This guitar effect circuit uses a simple high gain amplification, followed by a symmetric clipping using parallel diodes clipper. The gain of the 741 op-amp pre amplifier will be R3/(total impedance of guitar pickup + C1).  With 1 kOhm guitar … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/10/01/fuzz-box-distortion-pedal-guitar-effect/feed/ 0 http://www.simplecircuitdiagram.com/2011/08/02/one-shot-multivibrator/ http://www.simplecircuitdiagram.com/2011/08/02/one-shot-multivibrator/#comments Tue, 02 Aug 2011 13:50:48 +0000 Rend http://www.simplecircuitdiagram.com/?p=2654 A one shot multivibrator generate a fixed width pulse at the output when the input is triggered. This fixed width output should be consistent, regardless the width of the input trigger. One example of one shot multivibrator circuit is shown … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/08/02/one-shot-multivibrator/feed/ 0 http://www.simplecircuitdiagram.com/2011/07/20/amplitude-modulator-with-ota/ http://www.simplecircuitdiagram.com/2011/07/20/amplitude-modulator-with-ota/#comments Wed, 20 Jul 2011 15:11:47 +0000 Rend http://www.simplecircuitdiagram.com/?p=2655 Circuit described in the schematic diagram below can achieve 99% modulation easily with maximum frequency of 200kHz. The amplification of this circuit can be controlled easily since the transconductance of an operational transconductance amplifier is directly propotional to the control … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/07/20/amplitude-modulator-with-ota/feed/ 0 http://www.simplecircuitdiagram.com/2011/05/23/50-khz-fm-optical-receiver/ http://www.simplecircuitdiagram.com/2011/05/23/50-khz-fm-optical-receiver/#comments Mon, 23 May 2011 01:13:19 +0000 Rust http://www.simplecircuitdiagram.com/?p=2593 Frequency modulation (FM) can be used to transmit analog voltage level signal with good noise immunity. The transmission itself  might employs different methods, and this circuit uses free air optical medium. This optical receiver circuit is built using a L14G2 … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/05/23/50-khz-fm-optical-receiver/feed/ 0 http://www.simplecircuitdiagram.com/2011/05/11/lm331-frequency-to-voltage-converter/ http://www.simplecircuitdiagram.com/2011/05/11/lm331-frequency-to-voltage-converter/#comments Wed, 11 May 2011 13:46:24 +0000 Rust http://www.simplecircuitdiagram.com/?p=2575 The frequency to voltage converter circuit illustrated in the schematic diagram below produces a 10 V output for 10 kHz full scale input (square waves or pulses).  The simplicity of the circuit doesn’t mean a bad performance: this circuit has … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/05/11/lm331-frequency-to-voltage-converter/feed/ 0 http://www.simplecircuitdiagram.com/2011/04/21/high-impedance-input-hi-fi-tone-control/ http://www.simplecircuitdiagram.com/2011/04/21/high-impedance-input-hi-fi-tone-control/#comments Thu, 21 Apr 2011 11:42:43 +0000 Rend http://www.simplecircuitdiagram.com/?p=2538 Tone control circuit is an electronic circuit which is designed to manipulate the tone of audio signal. Tone of audio signal is analog to color in light. We don’t call the tone of audio signal as red, green or or … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/04/21/high-impedance-input-hi-fi-tone-control/feed/ 0 http://www.simplecircuitdiagram.com/2011/04/17/low-cost-logarithmic-converter-using-opamp-and-transistor/ http://www.simplecircuitdiagram.com/2011/04/17/low-cost-logarithmic-converter-using-opamp-and-transistor/#comments Sun, 17 Apr 2011 03:26:50 +0000 Rend http://www.simplecircuitdiagram.com/?p=2521 This low-cost logarithmic converter is built using op-amp and transistor. This circuit uses a Motorola MC1539G op-amp which is connected to PNP transistor. To compensate the error, this circuit need an external compensation which can accommodates wide range of input … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/04/17/low-cost-logarithmic-converter-using-opamp-and-transistor/feed/ 0 http://www.simplecircuitdiagram.com/2011/03/23/20hz-high-pass-rumble-filter-subsonic-blocker/ http://www.simplecircuitdiagram.com/2011/03/23/20hz-high-pass-rumble-filter-subsonic-blocker/#comments Wed, 23 Mar 2011 01:44:37 +0000 Rend http://www.simplecircuitdiagram.com/?p=2497 This is a schematic diagram of 20-Hz high-pass rumble filter circuit.  Rumble noise could come from many sources, such as wind blow around an outdoor microphone, mechanical disturbance on phonograph, or many other possibilities. We can remove this noise by … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/03/23/20hz-high-pass-rumble-filter-subsonic-blocker/feed/ 0