COMBO GENERATOR

COMBO GENERATORTo 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

  • KATATSYA LOVE…KATATSYA LOVE…
    The sleigh is, of course, perfect! But what to do with baby clothes when the child returned from the street after riding on all these sleds? Dry, you say, and you're right. But the...
  • “LAMB”? THERE IS NOTHING EASIER!“LAMB”? THERE IS NOTHING EASIER!
    Quick coupling by means of a bolt and wing nut is highly popular among the homebrew. Unfortunately, you can buy nuts anywhere. We offer you a "lamb" simplified design is for everyone....