Защитная плата для динамика CIRMECH 12-24 В UPC1237, защитная плата для динамика, комплект для самостоятельной сборки, монитор постоянного тока

1. It has startup delay (about 3 seconds), DC protection, power failure and impact protection functions;

2. The fully sealed pure silver contact Omron relay in Japan has a long and reliable life;

3. Full wave rectification and 7812 voltage stabilization are used, AC and DC are automatically identified regardless of positive and negative, and the power supply range is

12-24V, low power consumption, about 60mA;

4. The control power is up to 200W, and the mono parallel connection can be increased to 400W;

5. The whole board area is 3.1 * 5.25 cm;

6. High quality FR-4 tinned A-level PCB, simple and reliable circuit without debugging;

7. It is suitable for OCL or OTL output power amplifier circuit, and BTL is only suitable for dual power supply racks

Structure, single power supply can not be used, please pay attention!!

8. Please use independent power supply/winding to supply power to the protection board to improve reliability!

1. The assembly tips are suitable for novice welding instructions. Please strictly follow the assembly tips to improve

Success rate, blind welding may cause damage to components or other devices, please pay attention!

2. Pay attention to the polarity of the main chip, bridge stack, 7812 voltage regulator, electrolytic capacitor and diode,

After welding, please check carefully to ensure that there is no error. Pay attention to the bevel edge of the chip close to the relay

One side is correct, as shown in the figure;

3. Connect AC/DC 12-24V power supply (no power connection is needed first

Amplifier and horn, power input does not need to distinguish between positive and negative),

Listen carefully. The relay should snap in about 3 seconds

The 12V output of 7812 chip is connected to the protection board

For positive input, the relay should be able to jump off quickly, indicating that the delay and protection functions are positive

It works normally, and then it can be connected to power amplifier and loudspeaker.