Free Simple Circuit Diagram
This is a simple circuit that shows the interface of a temperature transducer through a RS-232 interface cable. It can be used to measure a remote temperature far from the host system. While drawing little supply current from the power source, the temperature is converted into a square wave with a frequency proportional to the absolute temperature of its package […]
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This is a simple temperature measurement probe circuit. This circuit measures temperature either on a PC board or at the probe tip to which contains the temperature sensor. It can be used for debugging and troubleshooting electronic circuits. Here is the schematic diagram of the circuit: This circuit uses the MAX6610 as temperature sensor. We can scale the output to […]
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This circuit is used to allow a 4mA–20mA to power an analog temperature sensor. To provide a 4mA–20mA output over a 3.75V–28V compliance range this circuit uses an op-amp, low-dropout linear regulator, transistor and an analog temperature sensor. It is powered by the loop with the only consequence being a slight offset error because of the quiescent current of the […]
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This is a sine wave generator circuit. It generates an adjustable sine wave betwen 15 Hz to 150 kHz. This circuit uses the principle of Wien-bridge oscillator, with multiple capacitor selection. Here is the circuit: To control the frequency, this circuit uses a stereo 10K potentiometer. This circuit is using two potentiometers that have a single axis. It was shown […]
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