The standard variable voltage regulator type LM150 is fairly easily
available, but at times its out, which is limited to about 3 amperes,
may prove to e a limiting factor to its utility, nut the simple
modification describe here allows the to be enhanced to about 6 amperes.
The circuit has inbuilt safe area protection and thermal overload
protection.The circuit has been tested for lone regulation of the order
of about 0.01% volt and load regulation of about 0.1% volt.
The
circuit works on principle similar to the compact 10A power supplies.
The two LM150 regulators are wired in parallel mode with IC3 which
controls them. The output voltage is given by the relation
Vout=1,25x(1+R5/R4)
volts. The input voltage may lie anywhere in the range of 12 to 30
volts.
The IC must be adequately heat sinked in order
to obtain full output current all over the operative temperature range
The circuit 6A, 5 volt Power Supply
Hi,
ReplyDeleteThis is an easy to make power supply that has reliable, clear and regulator 12 to 30 volts intput voltage. The LM150 series of adjustable 3-terminal positive voltage regulators are the most popular variable voltage regulator. Thanks...