Sine Wave Generator

For measurement purposes in the electronics laboratory, signals of various frequencies and waveforms are frequently required. A standard function generator typically provides sine, triangular, and square wave outputs. The frequency must be adjustable and should encompass at least the...

This self-starting fixed-frequency oscillator circuit provides excellent frequency stability. R1 and C1 form the frequency-determining network, while R2 delivers the regenerative feedback. Diode D1 improves stability by compensating for the difference between VaH and VsurrLY. In applications where a...

The digital sine wave generator (oscillator) circuit requires only a few components to produce signals with high amplitude constants and a wide range of variable frequencies. This circuit generates a sine wave signal, and by altering the values of...

This circuit is designed to demonstrate high-frequency high voltage, capable of producing voltages up to approximately 30 kV, depending on the transformer used. It is economical and straightforward to construct, primarily utilizing a standard TV flyback transformer. The circuit...

Agreeable, very close sound imitation Suitable for sound effects, door-bells etc. This circuit generates a two-tone effect very much alike the cuckoo song. It can be used for door-bells or other purposes thanks to a built-in audio amplifier and...

For use with low-power transmitters that require a positive keying voltage. The transistors Q1, Q2, and Q3 are configured as a switching amplifier. When the key is pressed, the collector of Q3 is pulled to ground, which activates Q5...