HS1573 OEP60W Mono Digital Amplifier Board Module
Product Features:
- No heat sink, suitable for small space embedded
- boot no POP sound
- High gain eliminates the need to increase the preamplifier and reduce costs
- With output short circuit protection, troubleshooting immediately return to normal work
- Compatible with OEP20W, OEP30W pin and size for easy product replacement
- power amplifier board power supply, then the horn between the two pads DC voltage 0V, between the speaker pad and GND DC voltage is half of the power supply voltage.
- power amplifier board power, the hand can not touch the board components on the pin, because the human interference signal interference digital amplifier timing, resulting in damage to the chip, the body with static electricity - strong high voltage will break the damaged chip, the human body electrostatic hazards Be sure to know.
- Speaker rated power must be greater than the output power of the amplifier, otherwise the speaker power is too small, the voice coil short circuit caused by the power amplifier can not work and damage the amplifier;
- Power amplifier board default 36DB gain, computer input can only open the maximum volume of 20%, otherwise it will be serious because of amplification distortion, power amplifier chip serious damage, while damage to the speaker. Mobile phone input can be opened 90% of the volume, because the phone audio signal is much weaker than the computer. The computer to open 90% of the volume, you must reduce the gain board gain, short board two 20DB gain pad. Once the input audio signal is too strong, you must reduce the amplifier amplifier gain, otherwise the amplifier appears to amplify the distortion, serious distortion amplification - beyond the output power of the amplifier will damage the chip.
- 24V voltage is not directly available to the power amplifier board, because the 24V direct supply amplifier board, the voltage is too high, the capacitor is short-circuit instant, the current will be super-large, plus power amplifier 36DB gain, capacitor instantaneous strong current mutation , Will be 36DB power amplifier is very large, the amplifier chip than its own output power and breakdown short circuit damage. 24V voltage can only be through the switching power supply, start 220V voltage to buffer the start 24V voltage, thus restraining the moment of high current problem. (24V battery or lithium battery power supply, only in the VCC pin series 1-2 ohm 5W resistor current limit, thereby reducing the instantaneous current is too large problem.
