Receiver module test circuit

PT2272 receiving module test: The receiving module test circuit is as shown in the figure.
In order to ensure that the remote control module works normally, you can add a 5-6V DC voltage to the V(:c and GbID terminals of the receiving module
, or you can pass the 78L05 three-terminal
voltage regulator chip Stabilize the voltage to obtain a 5V DC stabilized power supply.
Connect a light-emitting diode to the ground at terminals ⑩, ⑩, @, ⑩, and ⑩ respectively (the cathode of the light-emitting diode is grounded). The receivers of the remote control modules provided
here are all latch-type. That is to say, it can
maintain the instantaneous state of the remote control signal. Assume that when the SB1 button of the transmitter
is pressed, the LED of the corresponding channel ⑩ will light up. Release the SB1 button of the transmitter, and
the LED of channel @ will still light up and be in the self-maintaining state. (Latch). Until other buttons such as the SB2 button are pressed, ⑩ goes out and the LED at @ lights
up. The @ terminal is the effective output terminal for decoding. No matter which button of the transmitter is pressed, as long as the decoding is successful, the @ terminal will becomes high level until the transmitter
stops transmitting. Using the @ terminal in conjunction with ⑩, ⑩, @, @ can make the remote control module have a non-latching function, which can be used to remotely control the on and off of a circuit
or the on and off of a lamp. destroy.