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FAST_CLAMP

2016-08-04 11:17  
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FAST_CLAMP
Smaller capacitance of temperature-compensated reference diodes allows clamping of faster pulses than is possible with ordinary zeners. Diagram shows positive 6.4-V diode clamp at ground potential. For smaller zener voltages, connect diode to more negative potential. Device Iimits only positive peaks; for negative peaks, reverse connections to 1N4570A. To clamp both polarities, use two units in parallel, oppositely connected.-W.Walloch, Clamp Fast Pulses with one Component, EDN Magazine, AprilG, 1974, p 76.