Simple compressor limiter

Simple compressor limiter Some years ago I designed a peak limiter to achieve more speech power when using single side band transmission, at the time National Semiconductors made a compressor IC that allowed to adjust the centre frequency thus where the compression took place. This value of C was such that it accommodated the frequency range of 300 Hz to […]

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Power Supply Protection

This article was supplied by John VK3HJQ Hi there, Power Supply Problem I had a slight problem with my shack 13.8V 10A power supply, its output voltage went from 13.8v to 26v, “Oh No”, “Yes No” it took out the 723 voltage regulator, TIP31C & both 2N3055’s in the supply but luckily no radios. Here is a simple CrowBar circuit […]

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