Jeff Liebermann wrote:


A for electrolytic caps, it seems that the newer ones have a much
shorter life than the old ones did.

Nope. The old ones filtered at 120 Hz. The new caps filter at 100 to
300 KHz. Internal dissipation follows frequency.



** Complete ********.

Electro cap dissipation is lower at high frequencies cos the ESR is lower at such frequencies.

The no 1 reason for short lifspan is being sited next to heat sources, like power resistors and heatsinks.

The no 2 reason is bad manufacture by no name brands in China etc.


...... Phil