http://www.simplecircuitdiagram.com Free Simple Circuit Diagram Tue, 24 Jan 2012 02:31:05 +0000 en hourly 1 http://wordpress.org/?v=abc 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/2011/04/21/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/2011/03/23/20hz-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 http://www.simplecircuitdiagram.com/2011/03/13/high-q-notch-filter-with-active-twin-t-network/ http://www.simplecircuitdiagram.com/2011/03/13/high-q-notch-filter-with-active-twin-t-network/#comments Sun, 13 Mar 2011 23:36:19 +0000 Rend http://www.simplecircuitdiagram.com/?p=2447 This is a circuit of High-Q Notch Filter. This circuit consist of LM102 and a twin “T” network. Twin T network sum two signal from different path with different phase shift. At certain frequency, the phase shift will be 180 … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/03/13/high-q-notch-filter-with-active-twin-t-network/feed/ 0 http://www.simplecircuitdiagram.com/2011/03/03/bandpass-filter-for-bell103a-originator-modem/ http://www.simplecircuitdiagram.com/2011/03/03/bandpass-filter-for-bell103a-originator-modem/#comments Thu, 03 Mar 2011 07:11:02 +0000 Rend http://www.simplecircuitdiagram.com/?p=2419 Bell103A modem standard specify that the originator (the caller) uses 1070Hz and 1270Hz frequency shift keying for transmission, and listen for 2025/2225Hz FSK transmitted by the answering modem. This bandpass circuit filter out any frequency beyond 2025-2250 Hz to improve … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/03/03/bandpass-filter-for-bell103a-originator-modem/feed/ 0 http://www.simplecircuitdiagram.com/2011/01/25/two-op-amps-60-hz-notch-filter/ http://www.simplecircuitdiagram.com/2011/01/25/two-op-amps-60-hz-notch-filter/#comments Tue, 25 Jan 2011 02:53:34 +0000 Rust http://www.simplecircuitdiagram.com/?p=2302 Notch filter is a filter that remove a certain B. Ideally a notch filter will remove only single point of frequency  component, but practically it will remove a limited range of frequency spectrum. The spectrum should have very small bandwidth … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/01/25/two-op-amps-60-hz-notch-filter/feed/ 0 http://www.simplecircuitdiagram.com/2010/11/22/passive-audio-stereo-to-surround-adapter/ http://www.simplecircuitdiagram.com/2010/11/22/passive-audio-stereo-to-surround-adapter/#comments Mon, 22 Nov 2010 03:09:09 +0000 Rust http://www.simplecircuitdiagram.com/?p=1853 Below is a passive surround converter/adapter circuit diagram. To make this circuit works, passive surround doesn’t required any active components. This circuit only need the combined of resistors and electrolytic capacitors. Do not use woofer or tweeter speakers for rear … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/11/22/passive-audio-stereo-to-surround-adapter/feed/ 0 http://www.simplecircuitdiagram.com/2010/11/22/turbo-bass-booster/ http://www.simplecircuitdiagram.com/2010/11/22/turbo-bass-booster/#comments Mon, 22 Nov 2010 02:57:38 +0000 Rend http://www.simplecircuitdiagram.com/?p=1846 This is a Turbo Bass circuit. Using this circuit, the low frequency sound signals(bass) can be multiplied. This circuit is an active circuit. The first op-amp is used to buffer the audio input signal. The signal will be filtered by … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/11/22/turbo-bass-booster/feed/ 0 http://www.simplecircuitdiagram.com/2010/10/07/philips-dynamic-noise-limiter/ http://www.simplecircuitdiagram.com/2010/10/07/philips-dynamic-noise-limiter/#comments Thu, 07 Oct 2010 08:23:26 +0000 Rend http://www.simplecircuitdiagram.com/?p=1621 When there is quiet passages, a tape noise becomes disturb. This noise can be reduces using Philips’ Dynamic Noise Limiter circuit. The principle operation of this circuit is improve the signal-to-noise ratio during the quite periods by decreasing the gain … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/10/07/philips-dynamic-noise-limiter/feed/ 0 http://www.simplecircuitdiagram.com/2010/09/19/powerline-carrier-current-remote-control-or-intercom/ http://www.simplecircuitdiagram.com/2010/09/19/powerline-carrier-current-remote-control-or-intercom/#comments Sun, 19 Sep 2010 13:11:10 +0000 Rend http://www.simplecircuitdiagram.com/?p=1481 Using 567 IC tone decoder/detector, we can build a remote control and or intercom. This circuit can be used to control a relay, or to carry an audio signal (intercom) through power-line wiring. Here is the schematic diagram of this … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/09/19/powerline-carrier-current-remote-control-or-intercom/feed/ 0