•  
  •  

Simple IF Signal Generator

Here is a versatile circuit of IF signal generator which may be of interest to radio hobbyists and professionals alike.Transistors T1 and T2 form an astable multivibrator oscillating in the audio frequency range of 1 to 2 kHz. RF oscillator is built around transistor T3. Here again a 455kHz ceramic filter/resonator is employed for obtaining stable IF. The AF from multivibrator is coupled from collector of transistor T2 to emitter of transistor T3 through capacitor C3. The tank circuit at collector of transistor T3 is formed using medium wave oscillator coil of transistor radio, a fixed 100pF capacitor C5 and half section of a gang capacitor (C6).

The oscillator section may be easily modified for any other intermediate frequency by using ceramic filter or resonator of that frequency and by making appropriate changes in the tank circuit at collector of transistor T3. Slight adjustment of bias can be affected by varying values of resistors R6 and R7, if required

If there are any problems please contact webmaster@electronic-circuits-diagrams.com

Please share & like

MINI MMA-250 250A Stick ARC Inverter Welder 220V Welding Machine + Accessories
$89.99 MINI MMA-250 250A Stick ARC Inverter Welder 220V Welding Machine + Accessories picture
MINI MMA-250 250A Stick ARC Inverter Welder 220V Welding Machine + Accessories
$89.99 MINI MMA-250 250A Stick ARC Inverter Welder 220V Welding Machine + Accessories picture
MITSUBISHI FR-Z120-0.75K INVERTER
$350.0 MITSUBISHI FR-Z120-0.75K INVERTER picture
MITSUBISHI FR-E520-0.75K INVERTER
$80.0 MITSUBISHI FR-E520-0.75K INVERTER picture
SUNGOLDPOWER 200Amp TIG ARC MMA Stick IGBT DC Inverter Welder System Digital LED
$311.43 SUNGOLDPOWER 200Amp TIG ARC MMA Stick IGBT DC Inverter Welder System Digital LED picture