Free electronic circuit design and schematic diagram
National LM378 amplifier is used as a basis for economical proportional motor speed controller. This integrated circuit is able to deliver 700 mA continuous current for such DC motor applications such as antenna rotors or motor controlled valves. The basic of proportional control is as simple as amplifying the error signal to produce an action in such direction that minimize […]
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Another example of frequency-to-voltage converter application similar with RPM/Speed Indication is motor speed control. Here the converter is used to measure the actual speed which will be fed back to keep the actual speed stabilized according to a reference. Here is the block diagram of this control system: If the speed is to high, the output of the F/V converter […]
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Generally, specifically combined ICs perform a control task. We can carry out simple controls using analog ICs, such as operational amplifier circuitry. The basic component of “Control Electronics” is an integrated circuit (IC). IC is a small electronic device made out of a semiconductor material. According to equation 1, this analog circuit calculates PID control response. Sensor signal VIN is […]
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The circuit diagram below shows us about a form of PID controller. The input signal is buffered and amplified by a non-inverting amplifier and the gain of this stage defines the proportional gain P of the controller.The amplified error signal passes in parallel through an integrator (top) a unity-gain amplifier (middle) and a differentiator (bottom) all of which have inverting […]
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