Photoelectric control electronic birthday cake circuit
Source: InternetPublisher:Lemontree Keywords: Diodes power supplies and other power circuits Updated: 2020/10/12
Shown is the circuit of a typical photoelectrically controlled electronic birthday cake. In the figure, VD1 is a photosensitive diode, and IC1 is a control circuit, which is a music chip. When the switch S is turned on and the candle is lit to illuminate VD1, the voltage at pin ② of IC1 drops, and pin @ outputs the control voltage. The music chip works and outputs a music signal to drive the buzzer. The instrument makes a sound.
Latest Power Circuits Circuits
- A very convenient small power supply circuit to share
- ISO113 circuit that can reduce power consumption
- Basic connection circuit of signal and power supply composed of ISOll3
- The constant current source composed of two transistors can drive high power
- LNK304 non-isolated LED light string driver circuit
- Using CW34603 to form a circuit to change the polarity of the output power supply
- A novel and practical DC low voltage stabilized power supply
- CNC regulated power supply production
- Converting a lithium battery charging board into a constant voltage and current charger
- LM317T voltage regulation adjustable circuit diagram explanation
Popular Circuits
- Power diode analysis
- Object presence and displacement detection circuit
- Multifunctional conductivity tester circuit
- 3 and 1/2 digit digital thermometer using diode as temperature sensor
- Low supply voltage diode temperature measurement circuit
- Mosquito killer lamp circuit
- PLC input and output wiring a
- Internal structure of MC1411 series Darlington current driver d
- One of the non-contact proximity switch circuits
- Dimming circuit with capacitor and diode
京公网安备 11010802033920号