More circuits about oscillator, pulse, frequency , and others.
The twin-T complementary amplifier circuit
The filter circuit of this main circuit will sent to through to the signal that middle frequency. At the same time is attenuated the others frequency into input signal to…
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…
The frequency meter by use the LC resonance circuit that adjustable until the frequency show peak amplitude.
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.
SEE! Simple Sine wave oscillator low frequency. Without thermistor and Incandescent lamp so very linear in transistor and zener diode circuit.
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 [...]