When the K2 switch is turned on, the voltage on C5 cannot be abruptly changed. The 2 and 6 pins of IC2 are still at the 0 level, the 3 pin box is high, the SCR1 is turned on, and the motor starts running. When the charging voltage on C5 exceeds the 2/3VDD trigger level, the 555 circuit is reset, the 3 pin is low, and the SCR1 is turned off. The motor speed is slowed down due to no power. When C5 is discharged to the trigger level of 1/3VDD of 2 feet, the 3 pin will be changed to high level again, SCRl is turned on, and the motor is powered and rotated. In this way, when the motor power supply is turned on and off, the wind blown out is weak and strong, and there is a feeling of breeze. The gust cycle of the illustrated parameters is approximately 25 seconds.
The KSPOWER brand P series led driver - small plastic unit led driver provides white color constant voltage single output LED Drivers with IP20 rating environment protection for indoor use. The Dc led driver accept universal input 100 to 240V AC voltage, it can make the output wattage of 3W to 60W and accept 5 Volt to 48 Volt DC output voltage optional. The P series LED DC driver is one plastic housing, accept one year after-sale customer service and both RU/cRU CE RoHS style enclosures. The P series AC adapter driver is small volume size design and protections for short circuit, over load, over voltage and over current. The P series small led driver use PC raw materials and 100% full load burn-in test, makes dc driver the power solutions perfectly easy for installation. The P series led driver transformer is the best choice for LED strips, LED 5050 RGB lights and led moving sign applications.
transformers led lights, Dc Led Driver, small led driver, led driver transformer, 30w led driver Shenzhenshi Zhenhuan Electronic Co., Ltd , https://www.szzhpower.com
RP4, C9, bidirectional trigger tube SCR2 and SCR3 form a stepless voltage regulator circuit. Therefore, in addition to the control of the fan's speed regulation, timing, and analog gust, the circuit can also regulate and time other home appliances. SCR selects 4A/400V bidirectional thyristor, and the load power of the socket can reach 800W.