Free Simple Circuit Diagram
Sample and hold circuit is used to pick a signal and hold the level at its output, making it useful for analog digital conversion or other application where the processing need a constant level signal for the input. The circuit that is shown in the schematic diagram below is one example of fast sample and hold circuit. This sample and […]
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If you need to hold an analog signal for infinite period then this digital sample and hold circuit is the solution. This circuit uses a Exar XR-2240 programmable timer/counter as main component. The Exar XR-2240 is triggered when strobe input is applied. The Exar XR-2240 start count when the timer is triggered and output of bistable latch is set to […]
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This is a LM412 sample and hold circuit. This circuit uses discrete components. This circuit also uses MPF102 JFET transistor and LM412 dual op-amps. The source is prevented to charge the capacitor by the MPF102. The LM412 is used because this op-amp has zero input bias current. This circuit has two mode, hold mode and sample mode. When this circuit […]
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This is a circuit of low drift sample and hold. This circuit uses two JFET, Q1 and Q2 that provides the sample and hold capacitor, C1. Q1 provides a path, Rds(on), for C1 and turned on during sample. Q2 IGSS (<100 pA) and Q1 ID(OFF) (<50 pA) as the only discharge paths because Q1 is turned off, during hold. Here […]
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