October 2013
Intermediate to advanced
312 pages
12h 10m
English
Content preview from The Maplin Electronic Circuits Handbook, 2nd Edition
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DUAL RAIL POWER SUPPLIES 71
Photo 3 A simple dual-rail
power supply based on
78
and
79
series regulators. The power
supply is built on a matrix
board (see Chapter 10). Note
the heatsinks fitted to the
regulators
the device incorporates safe operating area protection as well as input
overvoltage protection (up to 60 V, 10 ms) and short-circuit protection.
The output voltage and output current of the L200 may be readily
programmed by appropriate selection of resistors. Figure 3.37 shows a
fixed voltage/fixed current regulator arrangement which provides an
output of approximately 12 V at
1
A maximum. For different outputs, the
following formula ...
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