555 Fm Circuit Circuit


Posted on May 18, 2012

Circuit for applying a dc-coupled FM or PPM to a 555 configured as an oscillator. IC-1 - Motorola MC-1374P. IC-2 - National LH0002C. L1, L2 - Mouser Electronics #421IF200. C1. C2 - Silver mica, 300 pF. All 0.1 uF cap., ceramic disc, 16V. C3 - 100 uF, 10 V, electrolytic ADJUSTMENT: Adjust R1 for minimum carrier; signal from function generator should generate 500 mVpp at pin 8 of IC-2 (suppressed carrier double sideband). Adjust R2 and function generator level-to achieve 800 mVpp at pin 8 of IC-2 (standard AM with carrier).


555 Fm Circuit Circuit
Click here to download the full size of the above Circuit.

Adjust L2 for 455 kHz. Adjust L1 for maximum output.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

beeper circuit
Field-programmable Operational Transresistance Amplifier using Floating-gate MOSFETs
Bedini Motors
Phone Line Polarity Checker
Understand the 74HC595
Build an IR Beam Breaker
usb
electrometer schematics
PC Based Wireless Stepper Motor control Circuit PCB
3 channel audio mixer
Computer Circuit
Thermocouple cold junction compensator AD594 595 centigrade thermometer circuit diagram
Audio Monitoring System



Top