3 Sawtooth wave generator circuits
This is Sawtooth wave generator circuit using UJT transistors is easy. to connects with VR1(potentiometer), VR2 and C1. adjust frequency and waveform out Read more
RF – Radio Circuits
7 Radio Frequency circuit diagrams
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 confirm it works and does not know the source. If you do not like it please tell me. Simple field strength meter This circuit is … Read more
FM wireless microphone circuit diagram
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. Read more
Simple AM receiver circuit with earphone
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. Read more
Simple Frequency Divider using one transistor BC549
If you looking for simple frequency divider circuit. This may be suitable for you. It will divide a frequency of input signal into just half to output. Read more