POWER_TRANSFORMER_SWITCHING_RELAY_SENSES_LINE_VOLTAGE

Published:2009/7/21 10:04:00 Author:Jessie | From:SeekIC

For 230-V line voltage, zener diodes back-bias D5, preventing energization of relay. For 115 V, diode conducts and relay closes, connecting line to 115-V tap of transformer. –L. K. Moyer, Circuit Always Applies Correct Operating Voltage, Electronics, 37:25, p 77.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/POWER_TRANSFORMER_SWITCHING_RELAY_SENSES_LINE_VOLTAGE.html

Print this Page | Comments | Reading(3)