This variable gain circuit for analog video signals was found in a 90s Linear Technology documentation. The circuit has an adjustable gain between -12 and +8 dB.
This protector was found in an Electronics Now from the 90s. The 250 V transient suppressors are common...
We found this circuit in the National Semiconductor's Linear Applications Handbook of 1994. The...
This 80's circuit makes use of a photomultiplier valve. The circuit also requires a scintillation...