Audio / Video Signal Monitoring Circuit AV Detection Delay AUD1A AUD1B | Air Conditioner Parts

Audio / Video Signal Monitoring Circuit AV Detection Delay AUD1A AUD1B | Air Conditioner Parts

Function:

After the input side monitors the audio or video signal, the output state flips and maintains immediately; after the audio or video signal disappears, the output state delays and resets. The delay time is 0.2 seconds -60 sec.

Size:

It does not contain pins 15 mm *13 mm (the same size as AUD1A and AUD1B).

Power supply voltage:DC 3V-15V

Standby current:3V — — 0.7mA,

5V — — 1.2mA,

12V——3.3mA

Output:

AUD1A: output high level 3mA or low level 3mA. A high level is detected after the effective signal is detected.

AUD1B: output high level 1500mA or open circuit state. A high level is detected after the effective signal is detected. The output terminal has protective diodes, which can be directly connected to various loads (including inductive load).

Sensitivity:

Audio or video signals with an amplitude not less than 180 mVp-p can trigger work effectively (the actual video signals are all 2V-2.5v).

Pin:

VCC— — power supply positive electrode

Vo— — output terminal

AVin— — AV signal input terminal

GND— — power supply negative pole

The potentiometer in the lower left corner of the module is used to adjust the delay time, and the clockwise adjustment time is extended.

Be careful:Even if there is no audio/video trigger signal, the circuit will output a high-level pulse signal at the moment of power-on, and then enter the normal working state.