quick question
I'm working on an sae 2200 I found in a thrift shop. The output transistors were bad for one channel, but I figured I would just replace all of them. However, in my haste I didn't mark down the order that they were in (NPN PNP NPN PNP) or whatever. I would rather not trace the circuits myself so if anyone has this information I would be very appreciative.
Joe
I'm working on an sae 2200 I found in a thrift shop. The output transistors were bad for one channel, but I figured I would just replace all of them. However, in my haste I didn't mark down the order that they were in (NPN PNP NPN PNP) or whatever. I would rather not trace the circuits myself so if anyone has this information I would be very appreciative.
Joe
Collectors of the NPN outputs go to the positive supply. The PNP collectors go to the negative supply. Your meter is your friend.
Has anyone had issues using MJ21193/94 in place of the MJ15024/25 recommended?
The specs are ALMOST identical except for Collector cutoff current, which is significantly lower on the newer OnSemi part. Mouser doesn't have the MJ15024/25 parts in stock, so I am considering alternative parts.
The specs are ALMOST identical except for Collector cutoff current, which is significantly lower on the newer OnSemi part. Mouser doesn't have the MJ15024/25 parts in stock, so I am considering alternative parts.
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