A variable frequency oscillating circuit transistor

Posted on Dec 11, 2010

Fig variable frequency oscillator transistor circuit, which is mainly an oscillator, the crystal resonator and varactor circuit by the transistor diode, the output of the ampli

A variable frequency oscillating circuit transistor
Click here to download the full size of the above Circuit.

fier, typically used to make high-frequency transistor oscillator. 30 MHz transistor circuit inductor LP is connected VT1 emitter circuit, it is connected in parallel and then in series with varactor diodes, and then with 75 p capacitor connected in series between the emitter and collector VT1. VT2, VT3 amplifier constituted after the oscillation signal is amplified by the VT3 collector electrode output. Changes between V - + - 4 varactor control voltage.

Leave Comment

characters left:

New Circuits



Popular Circuits

NiCad charger with independent discharge
100 Mhz frequency period counter
Electronic light flasher
Low-volts alarm
860 Watt limited-range light control
Flashing Heart circuit diagram
interfacing of led wiht avr atmega16
Contactless telephone ringer circuit
Whistle Responder Schematic
PIR Sensor Circuits