To build and repair electronic equipment needs generators low and high frequencies. A simple device, a scheme which offers the British magazine “Radio Electronics Constructor”, replace them at first. The single junction transistor V1 performs the functions of the relaxer. The value of resistor R1 and capacitor C1 determine the value of the audio frequency (about 1 kHz). It change the selection of capacitor C1. Using an isolating capacitor C3 of the low-frequency signal is supplied to the output socket. And since it has a sawtooth form, that contains a large number of higher harmonics.
To highlight intermediate frequency 460-470 kHz in the circuit of the base 1 includes a model transformer from NCH transistor radio. The desired frequency, select, Tarrytown core.
In the generator applied to the single junction transistor КТ117.
Recommend to read
NECROLATRY TABLE
"If I get sick — go to the doctors won't; turn to friends..." — wrote the poet J. Smelyakov. But life shows that you have to apply to doctors and friends, because without their help, it...
IN THE “BEAK” OF THE SPRING
When the pencil lines of the drawing or drawing close to each other — the usual eraser, it is difficult to remove the erroneous one so as not to damage the adjacent correct. But this...
