Elenco Variable Voltage Power Supply Manual do Utilizador Página 1

POWER SUPPLYMODEL XP-15Instruction ManualCopyright © 2013 by Elenco®Electronics, Inc. REV-A 753020All rights reserved.No part of t

Figure 1Simplified diagram of positive power supply120VAC Input18VAC20VDC 0 - 15VRegulatedOutputTransformer120V to 18VAC to DCConverterVoltageRegulato

-2-AC to DC CONVERTERThe AC to DC converter consists ofdiodes D1 and D3 and capacitor C1.Transformer T1 has two secondarywindings which are 180 degree

-3-In practice, the current through thediodes is not as shown in Figure 2E.Because capacitor C1 has a chargeafter the first cycle, the diode will notc

-4-Transistors Q1 and Q2 form a circuit known as a differentialamplifier. Transistor Q1’s base is connected to a stable 1.5Vreference voltage. The bas

SCHEMATIC DIAGRAMREV-A-5-

-6-PARTS LISTRESISTORSQty. Symbol Description Part #r 1 R2

ELENCO®150 Carpenter Ave.Wheeling, IL 60090(847) 541-3800Website: www.elenco.come-mail: [email protected] YEAR WARRANTYAll Elenco®models are gua