The ON-OFF state of photo coupler may sometimes change under the influence of a noise.
This is a dv/dt high-voltage pulse generator for CMR test. The dv/dt ranges has five kind. It can choose with a selection switch.
This unit supplies linear high voltage pulse that is used to test common mode noise immunity test of photo-couplers.Because photo-coupler socket, DC source of LED and secondary circuit are built in, it works as a common mode noise immunity tester once you supply a suitable scope. Waveforms below describe the linearity of 2kV/us ramp. | |
+1,000V amplitude |
-1,000V amplitude |
+2,000V amplitude |
-2,000V amplitude |
(Notes)
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