Infrared remote control dimmer light circuit

The introduced infrared remote control light can illuminate the light in countless ways or turn on and off the light, which
is very practical. The infrared remote control dimmer lamp consists of two parts: an infrared light transmitter and an infrared light receiving controller
. The infrared light transmitter circuit is shown in Figure 228 (a).
    The transmitter lb
is composed of routing oscillation, shaping, and controlled transmission parts. Gate circuits T and II
form a self-excited multivibrator with an oscillation frequency of 40kHz. It can be controlled
by fine-tuning the resistor RP. Since R in the circuit is far greater than (R: + RP), the power supply voltage changes. It has little effect on the oscillation frequency, which is very beneficial to improve the reliability of the remote control switch . Oscillation frequency, ≈ 1/2. 2 (billion RP)'. The output of the multivibrator is shaped by gate circuits III and IV and then drives and modulates the operation of the emission control tube VT1 to make the second batch of infrared emission tubes VI. l. VI.2 emits infrared rays modulated by the 40kHz Fangdu signal. The purpose of using two H infrared emission tubes is to enhance the radiation intensity of infrared light, which is beneficial to increasing the remote control distance.     The circuit of the infrared light receiving controller is shown in Figure 228(b). It consists of a receiving eight-harmonic amplifier, an electronic switch, a stepless light integrated IU shoe and a power supply circuit.     The receiving harmonic amplifier is served by the infrared dedicated amplifier integrated circuit A! (pPC, 1373). It has an internal high-gain preamplifier, peak detector, and output buffer to provide bias voltage to the external infrared receiving tube VI . ,3 electricity consumption. L.C. ． It forms a frequency-selective rigid network with a resonant frequency of 40kHz. Due to the errors caused by the inductance and capacitance, the resonant path may not be accurately tuned to 40kHz, but this does not matter, it can be compensated by the transmitter resistor RP. VI. 3 is the infrared receiving diode. When it receives the 40kHz modulated infrared light, the first pin of 2 suddenly changes to low level. When the electronic switch VT2 is turned on, a high-level trigger signal is input to the SI and AVF terminals of the dimming integrated circuit A3 (SS0613), namely pin ⑥.     The ⑥ pin SI.AVE terminal of SS0613 is a high level triggering effective phase shift input terminal. When the infrared transmitter is connected for less than about 0. Rs, the light can be turned "on" or "off" "Remote control operation. If the button press time is above 0 3 s, remote control stepless dimming can be achieved. When the light brightness is deemed appropriate, release the button and the brightness will be fixed. Then send a short remote signal (approximately less than 0 3 s). ). The light will turn off; then send a short signal, the light will light up, and the brightness will remain at the last set brightness. If the button is pressed for more than 0 l{s, the stepless dimming will be performed again.     Use [ '[)4011 four-2 NAND gate digital integrated circuit, which contains four 2-input terminals NAND fj. When actually used, the 2 input terminals of each NAND gate are connected together to form 4 The inverter is a NOT gate I- w. A2 is an infrared dedicated amplification integrated circuit t/PC1373, which adopts a single in-line packaging. A3 adopts the SS (J613 type touch screen produced by Shenzhen Shangstar Electronics Co., Ltd. Dimming special integrated circuit . VI.1 and VI.2 use SF:303 type and other infrared emitting diodes. VI.3 is Pfl302 type and other infrared receiving diode. VTH uses MAL, 97A6 small plastic-packed double l uranium thyristor, its maximum The on-state current reaches 1A. G requires the use of CJ313 400 and polyethylene capacitors. L is an imH color code inductor. There are no special requirements for other components.