This is Sawtooth wave generator circuit using UJT transistors is easy. to connects with VR1(potentiometer), VR2 and C1. adjust frequency and waveform out
More circuits about oscillator, pulse, frequency , and others.
There are many radio Frequency circuit diagram that I collect them. They may be useful for you. The ideas are important for the learning circuit. I am sorry that cannot…
This is a FM Wireless Microphone circuit Which we add one transistor in the RF amplifier. So this circuit have two resonance circuits and also two trimmers. This cause have Higher efficiency and transmission far up.
This am radio receiver circuit with earphone is a saving version that use a few parts, cheap , easy to build and suitable to be assembled to study,3V batt.
This is Wide band high frequency amplifier circuit,Wide frequency band between 75-150 MHz,Using transistors to enhance signal strength FM or amateur radio [...]