1000_V_FOR_CRT

Published:2009/7/12 22:43:00 Author:May | From:SeekIC

Unique connection of two TV boostertransformers having 125-V secondaries gives high-voltage supply for small monitor scope. T1 is connected conventionally, with its 6.3 V winding going to heater of CRT, 6.3-V winding of T2, also connected to CRT, serves as primary for second transformer. Remaining windings of T2 and high-voltage secondary of T1 are connected in series aiding to give about 367 VAC fordoubling by D1-D2 and C1-C2. Since CRT drain is low, filter charges to very nearly peak voltage of 1027 VDC.-W. P. Tumer,Cheap Power Supply for a CRT, 73 Magazine, March 1974, p 53.



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