We found this circuit in an old English documentation. Its purpose is to synchronize circuits. The components support modern equivalents.
The circuit shown is from National Semiconductor's Linear Applications Handbook. The LM3900 is a...
We found this circuit in a documentation from the 50s. It is based on CK722 germanium transistors. The...
This amplifier was found in an English publication from the 60's. The transistors are germanium of the...