•  
  •  

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

JOHNSON CONTROLS D-3153-2 & D-3153-1 8-13 PSI SPRING DAMPER ACTUATOR LOT OF 3
$24.99 JOHNSON CONTROLS D-3153-2 & D-3153-1 8-13 PSI SPRING DAMPER ACTUATOR LOT OF 3 picture
Johnson Controls A419ABC-1C Electronic Temp Controller 120v or 240volt
$44.0 Johnson Controls A419ABC-1C Electronic Temp Controller 120v or 240volt picture
Johnson Controls - R410 Pressure Transducer - P499RCP-107C
$55.0 Johnson Controls - R410 Pressure Transducer - P499RCP-107C picture
Brand New Johnson Controls EP-8000-4 Transducer, 4-20 mA, High Volume
$176.01 Brand New Johnson Controls EP-8000-4 Transducer, 4-20 mA, High Volume picture
Johnson Controls JCI MS-N301310-1 Rev L Used
$25.0 Johnson Controls JCI MS-N301310-1 Rev L Used picture