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A vacuum tube Abraham-Bloch multivibrator oscillator, France, 1920 (small box, left). Its harmonics are being used to calibrate a wavemeter (center).
A vacuum tube Abraham-Bloch multivibrator oscillator, France, 1920 (small box, left). Its harmonics are being used to calibrate a wavemeter (center).
Graph showing the output waveform of the Op-Amp and the waveform formed across the capacitor C.
Graph showing the output waveform of the Op-Amp and the waveform formed across the capacitor C.
monostable multivibrator using op-amp
monostable multivibrator using op-amp
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The blinking turn signal on some motor vehicles is generated by a simple relaxation oscillator powering a relay.
The blinking turn signal on some motor vehicles is generated by a simple relaxation oscillator powering a relay.
A vacuum tube Abraham-Bloch multivibrator relaxation oscillator, France, 1920 (small box, left). Its harmonics are being used to calibrate a wavemeter
A vacuum tube Abraham-Bloch multivibrator relaxation oscillator, France, 1920 (small box, left). Its harmonics are being used to calibrate a wavemeter (center).