Peter Demchenko discuss about a design idea on how to test capacitors in circuit.
The electrolytic capacitor is far from being the most reliable electronic component. One of its failure modes – a gradual loss of capacity – can hardly be noticed until power supply malfunction occurs. Thus, any chance to monitor the condition of the filter capacitors of an electronic device in situ would be a useful thing.
Capacitor self-diagnostics – [Link]
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