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Definition of "asymmetric multivibrator" |
a multivibrator where the output voltage represents a train of narrow pulses. Most asymmetric multivibrators use a slowcharge of a large timing capacitor by a small current (or via a large resistor)and a fast discharge of this capacitor via a switch. The charge process determines the duration of space; the mark duration, which coincides with the time allowed for discharge of the timing capacitor, is usually determined by a small time constant of the circuit controlling the switch. Asymmetric multivibrators find applications in voltage-to-frequency converters. Also called multivibrators with a small mark/space ratio. |
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