23-09-2020, 05:13 PM
Hi Ed,
Yes, I did look at using a socket that was intended for those metal can op amps. I have one of them and did wonder for a while but the following factors put me off:
1: A lot of these Russian NOS valves have been in store in all manner of places and their leads often tend to be slightly corroded so a more positive contact seemed sensible.
2: I have noticed that the wire ends of some Russian valves appear to have been cut far more brutally than the more clinically clean IC leads so would often not easily fit without clean trimming. (ie as if they were cut by a pair of old shears).
3: As in this example, the valve in question had been soldered in circuit so, with a layer of solder, the lead would be of indeterminate larger diameter.
One thing I did think about was the life of the ZIF socket , thinking about the factors above. The stated life of the one I have is 20,000 actuations but even if life is far less due to contact wear I doubt that I will even use it to 1,000.
Tracy
Yes, I did look at using a socket that was intended for those metal can op amps. I have one of them and did wonder for a while but the following factors put me off:
1: A lot of these Russian NOS valves have been in store in all manner of places and their leads often tend to be slightly corroded so a more positive contact seemed sensible.
2: I have noticed that the wire ends of some Russian valves appear to have been cut far more brutally than the more clinically clean IC leads so would often not easily fit without clean trimming. (ie as if they were cut by a pair of old shears).
3: As in this example, the valve in question had been soldered in circuit so, with a layer of solder, the lead would be of indeterminate larger diameter.
One thing I did think about was the life of the ZIF socket , thinking about the factors above. The stated life of the one I have is 20,000 actuations but even if life is far less due to contact wear I doubt that I will even use it to 1,000.
Tracy
