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This was a small circuit made for driving an Impact counter. The heart being ICL8038. It must have been a Motor driving a Conveyor, the motor has a feedback attachment called Tachogenerator. Only part of the circuit is shown here. See the image of product here Tacho Counter. The configuration is derived from the Application Notes [...] Specifications Frequency range – 0.95 Hz to 105 KHz in five decade ranges Datasheets ICL8038 waveform generator ICL8038 Circuits Electronics — ICL8038-based Oscillator Glossary THD – Total Harmonic Distortion – Total harmonic [...] A sample and hold is like an analog memory. If The digital control A is low 4066 switch is open, and when A is high switch is closed. U2B is a buffer so as to ensure quick charging of C1 thru 4066 on resistance of 100E. U2A is a FET input opamp buffer which does [...] A, B, and C are the Digital Control for x, y and z input and output pairs.The voltage at Vinx is stored in C1 when A goes high, when A is low the voltage stored in C1 is read by buffer U2A. The stby or standby input should be low when sample and hold is [...] |
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