Re: IRF510 amplifier failures

n5ib_2
 

One other possibility to consider to protect against overcurrent situations is to use a current limiting power supply, or add a current limiter to an existing power supply or battery.

The current limiter circuit whose link is at this site:
<http://n5ib.net/Index.xht>
will go up to 2.2 amps, and includes a low-dropout voltage regulator that also provides reverse polarity protection.

There is a version, in a different package, of that same regulator chip that has an added "tracking" feature - being able to parallel multiple chips to increase the available current. Details are on the datasheet in the document.

Jim, N5IB

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