Position: Index > Bridge Circuit >

VARIABLE_VNEN_BRIDGE_OSCILLATOR

2016-05-16 15:02  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


VARIABLE_VNEN_BRIDGE_OSCILLATOR
VARIABLE_VNEN_BRIDGE_OSCILLATOR
A Wien-bridge oscillator can be made variable by using two frequency-determining parts that are var-ied simultaneously at high tracking accuracy. High-quality tracking potentiometers or variable capacitors are, however, expensive and difficult to obtain. To avoid having to use such a component, this oscillator was designed to operate with a single potentiometer. The output frequency, f0,is calculated from: With preset P2 you can adjust the overall amplification so that the output signal has a easonably stable amplitude, 3.5 VPP max., over the entire frequency range. The stated components allow the frequency to be adjusted between 350 Hz and 3.5 kHz.