I recently evaluated an audio product. During fault condition test, I short-circuited an electrolytic capacitor in power supply unit and found two small-value carbon resistors in series with a group of output windings of the isolating transformer and rectifier circuitry burned out in a couple of seconds. I repeated it several times and it worked reliably. I am wondering if this method is deem to be acceptable as a reliable means to prevent overheating. Any different comments about such means of protection?
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