7815 regulated power supply circuit

Published:2014/3/11 22:49:00 Author:lynne | Keyword: 7815 regulated power supply circuit, 7815 | From:SeekIC

Continuously adjustable dual power ( positive and negative symmetrical power supply ) . This circuit consists of a symmetrical connection 7815 and a 7915 three-terminal regulator , you can get a set of positive and negative symmetrical power supply, and the output voltage can be adjusted individually each , can also be synchronized adjustment.Circuit as shown , the AC output from the transformer voltage by 18V double rectifier D1 ~ D4 , C1, C2 obtained by filtering a DC voltage, wherein the dual power transformer center tap as a common ground, and each of the positive and negative of the DC voltage access ① 7815 and 7915 feet of ③ feet. ③ 7815 feet of sliding contacts connected to the potentiometer W2 of d , the pin 7915 to the potentiometer ① sliding contact piece W1 C on . When the contacts C slide 0 when terminated , the regulator W2, to a and end get +6 ~ +15 V Forward variable voltage ; contacts If d slide 0 termination , the regulator W1, in the b side can get -6 ~-15V negative variable voltage, W1, W2 into coaxial potentiometer obtain the symmetrical adjustable power supply , the output voltage is continuously adjustable between ± 6V ~ ± 15V, can be synchronized adjustment purposes.7815,7915 heatsink should be installed on the three-terminal voltage regulator circuit block , do heat dissipation .7815 regulated power supply circuit shown in Fig.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Power_Supply_Circuit/7815_regulated_power_supply_circuit.html

Print this Page | Comments | Reading(3)