The main materials of switching power supply transformers are: insulating materials, wire materials, and magnetic materials. The switching power supply transformer and the switching tube form a self-excited or other-excited intermittent oscillator, which modulates the DC voltage into a high-frequency pulse voltage, and finally plays the role of energy transfer and conversion. When the switch tube is turned on, the transformer converts electrical energy into magnetic field energy for storage, and when the switch tube is turned off, it is released. In the forward circuit, when the switch tube is turned on, the input voltage will be directly supplied to the load and the energy will be stored in the energy storage inductor. When the switch is turned off, the energy storage inductor will continue to flow to the load. To put it simply, the role of the switching power supply transformer is to convert the input DC voltage into various low voltages that we need in use.
Switching transformer pin relatedSwitching power supply transformers are not conventional transformers! It is the inductance of the energy storage tank of the switching oscillator! It is the load and feedback component of the switch tube again! Transformer output is only one of the functions!
Common switching transformer oscillating coils have two pins, three pins, four pins, five pins, and six pins. The secondary is determined by the output voltage level! The more voltage grades! The more secondary pins!
Switching transformer pin wiringOne
There should be 4 heads on one side and 2 heads on the other side. The two heads should be secondary, and the 4 heads should be two coils. Use a multimeter to test briefly. The winding 1 with the higher resistance is connected to the power supply +. One end is connected to the collector of the power tube, and the remaining winding should be the feedback winding. For specific wiring, you will understand the mobile phone charger circuit if you search for it, which is not troublesome. If the feedback winding is connected incorrectly, the circuit will not oscillate. It should be fine to change the two wire ends of the winding.
two
This is a switching transformer that provides auxiliary power (standby power). Generally speaking, one side of pin 4 is the high-voltage side (input), and the other side of pin 3 is the low-voltage side (output). Since the design of various power supplies is different, the specific pin definition must be determined by looking at the traces on the back of the circuit board.
This transformer seldom fails, and there is nothing measurable: pin 4 and pin 3 should be completely blocked; pin 4 should be connected in pairs. If there is a short circuit inside the coil (usually the peripheral components will be burned), it cannot be measured. come out.
LED Wall Wash Light
Wall Wash Light Series Include 36x12w LED Wash light, 19x15w Led wash light; Both is hot selling in the lighting market.
36X12W RGBW 4 IN 1/5 IN 1/6 IN 1 /LED Wash Moving Head Light
Specification:
Pure bright in color effect, excellent color mixing, good heat cooling
36 pcs 12W RGBWA+UV 6in1 LED, 36 pcs 10W RGBWA 5in1 LED, 36 pcs 10W RGBW 4in1 LED
10-60 zoom angle, narrow beam effect to wide wash effect, functional in usage.
Small size, easy to carry and install, each unit weighs only 9kg
Linear smooth dimmer from 0-100%, 1-20 times strobe per second, flicker-free for TV and films.
Suitable for mobile productions, events, parties, stage installations, theater, musical concert, TV studios.
Our company have 13 years experience of LED Display and Stage Lights , our company mainly produce Indoor Rental LED Display, Outdoor Rental LED Display, Transparent LED Display,Indoor Fixed Indoor LED Display, Outdoor Fixed LED Display, Poster LED Display , Dance LED Display ... In additional, we also produce stage lights, such as beam lights Series, moving head lights Series, LED Par Light Series and son on...
Wall Wash Light Series,Disco Light,Led Washer Light,Moving Head
Guangzhou Chengwen Photoelectric Technology co.,ltd , https://www.cwleddisplay.com