why a diode bridge
why a diode bridge
(OP)
LS,
In the input circuit of a measuring instrument also a diode bridge is placed (behind an opto-coupler). The input circuit is connected to another instrument with a voltage free contact. It is simply used to measure the frequency of the incoming pulses (between 1 and 10 Hz).
Why is a diode bridge placed in the input circuit? Can it be used to protect against induced currents/voltages, due to capacity in a long cable?
DYV
In the input circuit of a measuring instrument also a diode bridge is placed (behind an opto-coupler). The input circuit is connected to another instrument with a voltage free contact. It is simply used to measure the frequency of the incoming pulses (between 1 and 10 Hz).
Why is a diode bridge placed in the input circuit? Can it be used to protect against induced currents/voltages, due to capacity in a long cable?
DYV





RE: why a diode bridge
Keith Cress
kcress - http://www.flaminsystems.com
RE: why a diode bridge
The the bridge will convert the positive and negative half cycles of AC into all the same polarity, doubling the frequency of the pulse train. The instrument must be designed with this in mind.
Bill
--------------------
"Why not the best?"
Jimmy Carter