The wideband limiter was developed for protection of sensitive receivers in measurements with PLISNs. Transient voltage spikes produced during heater regulation in laser printers are one of the highest. The transient voltage in connection with PLISN can be several kV high. The transient limiter attenuates such kV spikes to hundreds of millivolts. It also protects receiver against general too strong CW and impulse signals. It is important to use a high-pass filter in front of the limiter for some PLISNs to suppress 50/60Hz fundamental power line frequency.
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