Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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or not

Posted by madisonears (A) on July 1, 2018 at 18:43:56

In Reply to: Nice! ... posted by Crazy Dave on June 30, 2018 at 17:47:46:

Opamp rolling is fun, and sockets certainly make it easier with far less risk to the PCB. However, sockets are hardly an ideal device, with EIGHT additional mechanical connections in a very sensitive part of a circuit. Gold plate means little, as the primary problem is the additional lead length and the very nature of a mechanical connection.

Inmates are typically obsessed with improving or eliminating mech conns, going so far as to hard wire IC's, speaker cables, and power cords, which is at least inconvenient if not dangerous.

Any additional lead length will add inductance, which could affect signal transmission. PCB designers take care to avoid excessively long paths, including pad spacing to allow shortest possible component leads.

A DIP socket plops eight unnecessary longer leads plus eight mech conns right where they're most likely to have a real effect.

So roll those opamps, have some fun, but when you've finally chosen a winner, lose the socket and solder those babies in. It's not the easiest thing to do, but, with a little patience and some solder wick, it's not impossible and will yield further improvement.

Peace,
Tom E
berate is 8 and benign is 9

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