This receiver circuit was found in a Hands On Electronics from the 90s. The circuit uses a PLL 561B that is not a common component today.
This circuit was found in a Popular Electronics from the 90s. The transistors are general purpose, and...
The transistor in this circuit can be the BC548 or any general-purpose equivalent, and the phone...
This 9-pixel circuit has been implemented with 9 LDRs and can be coupled to a processing system for...