The phase of the circuit flows, thereby controlling the on-state of the thyristor (i.e., the on-off state of the lamp).
The control circuit includes a microphone, a power supply part, a broadcast part and a trigger.
The resistor RI, the capacitor voltage regulator, the diode and the capacitor CZ complete rectification and filtering,
The DC voltage of 12V can be obtained in the circuit part. The microphone converts sound signals.
Converted into AC electrical signal, amplified by diode and sent to triode.
The base of the diode is connected to the T-pole fM of the diode composed of inductor and capacitor.
Oscillating circuit, if the frequency of the sound signal is related to the oscillation frequency of the oscillating circuit (only
The generated resonance is a high potential. Transistor v will be turned on and further amplified.
Function. If the frequency of sound signal (including Liu Yutou's signal) and the harmonic source of oscillation circuit
Phase shift will not produce resonance, and it is low potential; Triode off, signal
Unable to transmit further. The oscillating electricity rises to the anti-interference effect. When triode
When it is turned on, it is high potential, and the output on the flip-flop ICI is high potential after two flips.
The triode is turned on, and the thyristor 5CR is also turned on, because the control electrode G is at a high potential.
The lamp load is in the ON state (i.e., when the sound related to the oscillation circuit is received again, the lamp turns on H).
Sound signal, another pulse will trigger ICI-2 and make it turn, and the result will be touching.
The output of the generator becomes low potential, the triode is turned off, and the thyristor is controlled by
Pole G turns off at low potential, and the lamp load becomes off (i.e. the lamp goes out).