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/2011/12/20/heart-monitor-ecg-sensor-signal-amplifierconditioner/ http://www.simplecircuitdiagram.com/2011/12/20/heart-monitor-ecg-sensor-signal-amplifierconditioner/#comments Tue, 20 Dec 2011 20:16:02 +0000 Rend http://www.simplecircuitdiagram.com/?p=2724 Using the circuit depicted in the schematic diagram below we can monitor the heart pulses of patient. This circuit buffer and amplify the heart pulses, and the amplification bandwidth ranges from DC to 3 kHz. For the core of the … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/12/20/heart-monitor-ecg-sensor-signal-amplifierconditioner/feed/ 0 http://www.simplecircuitdiagram.com/2011/11/21/digital-ph-meter-signal-conditioner/ http://www.simplecircuitdiagram.com/2011/11/21/digital-ph-meter-signal-conditioner/#comments Mon, 21 Nov 2011 11:41:01 +0000 Rust http://www.simplecircuitdiagram.com/?p=2761 A pH meter circuit is basically an amplifier to boost a voltage signal which is produced by a pH probe. The pH probe itself is equal to a battery cell when submersed in the measured solution, producing a weak voltage … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/11/21/digital-ph-meter-signal-conditioner/feed/ 0 http://www.simplecircuitdiagram.com/2011/01/17/4-20ma-current-loop-bridge-sensor-transmitter/ http://www.simplecircuitdiagram.com/2011/01/17/4-20ma-current-loop-bridge-sensor-transmitter/#comments Mon, 17 Jan 2011 01:46:35 +0000 Rust http://www.simplecircuitdiagram.com/?p=2209 Bridged resistive sensing elements is common in resistive type sensors/transducers. This sensor type need a biasing voltage to operate. LM10 provide low reference voltage, which is suitable for powering usually low resistance bridge type sensors such as strain gauges. The … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/01/17/4-20ma-current-loop-bridge-sensor-transmitter/feed/ 0 http://www.simplecircuitdiagram.com/2011/01/10/audio-signal-strength-detectorconverter/ http://www.simplecircuitdiagram.com/2011/01/10/audio-signal-strength-detectorconverter/#comments Mon, 10 Jan 2011 02:39:45 +0000 Rust http://www.simplecircuitdiagram.com/?p=2265 Below is the schematic diagram of an audio input module. We can produce a DC output voltage that is proportional to the input signal amplitude (the signal strength) using this circuit. One application of this circuit is audio level meter. … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/01/10/audio-signal-strength-detectorconverter/feed/ 0 http://www.simplecircuitdiagram.com/2011/01/06/logarithmic-light-photodiode-sensor-signal-conditioner/ http://www.simplecircuitdiagram.com/2011/01/06/logarithmic-light-photodiode-sensor-signal-conditioner/#comments Thu, 06 Jan 2011 02:37:24 +0000 Rust http://www.simplecircuitdiagram.com/?p=2224 There are many measurement system that would be more suitable if we use logarithmic scale, especially when we try to mimics human sensory response. Most physical phenomenon that sensible to human’s biological sensor system is wide range in nature. Human … Continue reading →]]> http://www.simplecircuitdiagram.com/2011/01/06/logarithmic-light-photodiode-sensor-signal-conditioner/feed/ 0 http://www.simplecircuitdiagram.com/2010/12/06/basic-audio-mixer-using-op-amp/ http://www.simplecircuitdiagram.com/2010/12/06/basic-audio-mixer-using-op-amp/#comments Mon, 06 Dec 2010 02:23:48 +0000 Rust http://www.simplecircuitdiagram.com/?p=2093 Audio mixer is used to mix several audio signal from many channel into one channel, in analog form. The basic requirement of an audio mixer is that the mixed signal is a product of simple addition. When connected to several … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/12/06/basic-audio-mixer-using-op-amp/feed/ 0 http://www.simplecircuitdiagram.com/2010/11/23/signal-clamper-using-diode/ http://www.simplecircuitdiagram.com/2010/11/23/signal-clamper-using-diode/#comments Tue, 23 Nov 2010 14:39:55 +0000 Rust http://www.simplecircuitdiagram.com/?p=1988 Diode and capacitor can be used to clamp an AC signal, shift the level into positive region for all cycle. Sometimes this condition is needed, to have positive state at all time, for example in some analog-to-digital conversion. At first … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/11/23/signal-clamper-using-diode/feed/ 0 http://www.simplecircuitdiagram.com/2010/11/23/zener-diode-signal-limiter/ http://www.simplecircuitdiagram.com/2010/11/23/zener-diode-signal-limiter/#comments Tue, 23 Nov 2010 14:21:51 +0000 Rust http://www.simplecircuitdiagram.com/?p=1985 Zener diode has been commonly used as  signal limiter. With a single diode and a resistor, the limiter will limit the half cycle of a signal to it’s forward bias and  and the other half cycle to its reverse breakdown … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/11/23/zener-diode-signal-limiter/feed/ 0 http://www.simplecircuitdiagram.com/2010/11/15/fet-switch-a-voltage-controlled-analog-switch/ http://www.simplecircuitdiagram.com/2010/11/15/fet-switch-a-voltage-controlled-analog-switch/#comments Mon, 15 Nov 2010 03:15:14 +0000 Rend http://www.simplecircuitdiagram.com/?p=1832 This is a JFET switch circuit.This circuit uses a MPF102 JFET transistor. In this circuit, the JFET is symmetrical, so the input can be source or drain. The MPF102 is used because this transistor has gate’s reverse breakdown voltage of … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/11/15/fet-switch-a-voltage-controlled-analog-switch/feed/ 0 http://www.simplecircuitdiagram.com/2010/10/28/lm359-fast-photodiode-amplifier/ http://www.simplecircuitdiagram.com/2010/10/28/lm359-fast-photodiode-amplifier/#comments Thu, 28 Oct 2010 09:13:59 +0000 Rend http://www.simplecircuitdiagram.com/?p=1720 Photo-diode can be used for high speed digital transmission, but you have to provide high speed signal conditioner for that purpose. The amplifier circuit shown in the schematic diagram below satisfy the high-speed requirement. The circuit is based on current … Continue reading →]]> http://www.simplecircuitdiagram.com/2010/10/28/lm359-fast-photodiode-amplifier/feed/ 0