Free Simple Circuit Diagram
Oscillator circuit is an electronic circuit that produce a periodic signal. The term quadrature refers to a fourth (1/4) phase shift of full wave cycle (1/4 of 360′ = 90′). In square wave oscillator, a quadrature simply means a 1/4 period phase shift. Here is a schematic diagram of such circuit: This circuit uses a 567 tone decoder circuit, which […]
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Flip-flop, as an astable multivibrator, can be used to generate timing signal in music: metronome. By adjusting transistor bias resistor using a 100k potentiometer, the charging and discharging time of capacitors can be adjusted to get proper tick period for the metronome. Here is the schematic diagram of this simple metronome circuit. This metronome circuit can be put in a […]
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In personal electronics and computer audio system, the SSM2167 is a complete and flexible solution for conditioning microphone inputs. It is also very good for improving vocal clarity in communications and public address systems. Although it is not mentioned to be applied for electric guitar in the datasheet, the frequency response of this signal processor shows that it can be […]
Read moreA 40 watt fluorescent tube lamp or two 20-watt tubes in series will be driven by this circuit but this circuit will produce less brightness than usual, since this circuit only deliver 6-12 Watts. This circuit draws 0.9-1.2 Amps for 2 x 20 watt tubes, or 0.45-0.9A for 1 x 20 watt tube, depending on the potentiometer setting. Here is […]
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