VOLTAGE_FREEZER

Published:2009/7/9 22:17:00 Author:May | From:SeekIC

This circuit reads and stores voltages, thus freezing the meter reading even after the probes are removed. The op amp is configured as a unitygain voltage follower, with C1 situated at the input to store the voltage. For better performance, use an LF13741 or a TL081 op amp in place of the 741. These two are JFET devices and offer a much higher input impedance than the 741.



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