220V/110V High Power Pure Class A Amplifier With Soft Start Buffer Board Anti-Transformer Shock
Note: If you need to use in 110V, you can change the components yourself, we will have instructions with the board
2mm thick gold-plated PCB
Finished product size about: 89mm long, 86mm wide.
Maximum height of about 28mm, easy to install into a short chassis or shelf in the original machine PCB above
The main function of this board: to suppress the instantaneous inrush current of the amplifier, due to the high power of the class A and high-power amplifier transformer, the load impedance is very low and the power supply filter capacitor capacity is very large, which leads to the instantaneous over-current of the amplifier, and it is very easy to damage the transformer/rectifier bridge and damage the filter capacitor.
When the power is just turned on, the electrolytic has a charging process, and the power supply is sent to the consumer only after 4 high current negative temperature coefficient resistors (NTC) (soft start function).
After about 2 seconds of electrolytic charging, the relay will short the NTC and it will be in normal working condition.
It also achieves a smooth rise of the load voltage to the mains, protects the transformer/rectifier bridge and the big water pond, thus effectively protecting the appliances to prolong their service life and preventing the air switch from jumping.
Features
1. Using transistor-driven relays, reliable drive and more accurate buffer time.
2. Input and output compatible with 7.62 terminals and circuit board solder board end inserts, more safe and reliable, but also more convenient to install!
3. The finished board has default with 10A fuse, can be replaced according to their own requirements.
4. Circuit part can add LED light-emitting tube for indication
5. According to the requirements of the industry to add spark elimination capacitors, effective protection of the relay.
6. With a 30A relay, the maximum load power can reach 2000W.
7. 2mm thick PCB with sunken gold process; ensure the smooth and unobstructed current.
8. Many similar boards with transformer power supply, the transformer is very small, no-load current is large, serious heat generation.
This board does not use a transformer, more safe and reliable, easy to use to simplify the design, while not worrying about the introduction of magnetic leakage interference.
The whole board 2 terminals, a power input (before connecting a switch control), a load output, easy to use.
9. The finished board issued delay time to about 2S, can meet most of the amplifier to establish a working state.
If you need to adjust the delay time, change the capacitor of different values can be, very simple
Package：include depend your choose
Note: If you need to use in 110V, you can change the components yourself, we will have instructions with the board
2mm thick gold-plated PCB
Finished product size about: 89mm long, 86mm wide.
Maximum height of about 28mm, easy to install into a short chassis or shelf in the original machine PCB above
The main function of this board: to suppress the instantaneous inrush current of the amplifier, due to the high power of the class A and high-power amplifier transformer, the load impedance is very low and the power supply filter capacitor capacity is very large, which leads to the instantaneous over-current of the amplifier, and it is very easy to damage the transformer/rectifier bridge and damage the filter capacitor.
When the power is just turned on, the electrolytic has a charging process, and the power supply is sent to the consumer only after 4 high current negative temperature coefficient resistors (NTC) (soft start function).
After about 2 seconds of electrolytic charging, the relay will short the NTC and it will be in normal working condition.
It also achieves a smooth rise of the load voltage to the mains, protects the transformer/rectifier bridge and the big water pond, thus effectively protecting the appliances to prolong their service life and preventing the air switch from jumping.
Features
1. Using transistor-driven relays, reliable drive and more accurate buffer time.
2. Input and output compatible with 7.62 terminals and circuit board solder board end inserts, more safe and reliable, but also more convenient to install!
3. The finished board has default with 10A fuse, can be replaced according to their own requirements.
4. Circuit part can add LED light-emitting tube for indication
5. According to the requirements of the industry to add spark elimination capacitors, effective protection of the relay.
6. With a 30A relay, the maximum load power can reach 2000W.
7. 2mm thick PCB with sunken gold process; ensure the smooth and unobstructed current.
8. Many similar boards with transformer power supply, the transformer is very small, no-load current is large, serious heat generation.
This board does not use a transformer, more safe and reliable, easy to use to simplify the design, while not worrying about the introduction of magnetic leakage interference.
The whole board 2 terminals, a power input (before connecting a switch control), a load output, easy to use.
9. The finished board issued delay time to about 2S, can meet most of the amplifier to establish a working state.
If you need to adjust the delay time, change the capacitor of different values can be, very simple
Package：include depend your choose
