Basic Crystal Radio Receiver Circuit Diagram A is a very simple radio receiver which needs no battery or power source and runs on the power received from radio waves by a long outdoor wire antenna. This schematic shows the Basic designed by Elmer G. Osterhoudt in the early ’30s. Capacitor C2 is used to match the antenna system, and C3 is the main tuning capacitor. Here is the details parts and components:

C1: 1000 pF mica or disc ceramic trimmer (Radio Shack 272-123)
C2: 40 to 500 pF trimmer capacitor (Antique Electronic Supply CV-263)
C3: 365 pF variable capacitor (Antique Electronic Supply CV-231)
D1: 1N34 germanium diode (Radio Shack 276-1123)
J1: 1/4-inch, 2-conductor headphone jack (Radio Shack 274-252)
L1: 35 feet of 22-gauge enamel wire. See text. (Radio Shack 278-1345)

Related Post

1997 Ford Pickup Truck F360 Diesel Cruise Control Circuit
Circuit Diagram for 300W Subwoofer Power Amplifier by Rod Elliott
Analog Digital AD8051 Voltage Feedback Rail-to-Rail Amplifiers - Features Diagrams and Datasheet
Peugeot 106 Wiring Diagram Electrical System Circuit
Mass Air Flow MAF Sensor Circuit Diagram