Pre selector (T435E)

This circuit was found in a 1938 Radio Handbook. The source is not given and the table for the coils is next to the diagram. The tube is an 1851.

12 V to 10 A power supply (CB1219E)
This power supply can provide 10 A currents. Its regulation is made by 7812 integrated circuit. The...
Practical Circuits with an MCP6411 Operational Amplifier from Microchip (ART339aE)
Microchip's MCP6411 Operational Amplifier can operate at voltages of 1.7 V and has a quiescent...
High Speed FPC Connector
May 2017 - The new high-speed Amphenol FCI Flex connectors with up to 10 Gbps data transmission...