High-end power board with speaker protection AC15V-23V
Input voltage: AC 15V-32V
●Output voltage: main voltage, ±21V-±45V; auxiliary voltage, ±(15V), the auxiliary voltage is only suitable for small current power supply, such as the power supply of the preamplifier.
●The power board adopts the rectifier bridge produced by Fairchild Corporation of the United States, and the large pond filter adopts Japanese electrolytic capacitors to provide strong power to the power amplifier board. Use this power board to motor low-end power machine can have an immediate effect.
●The power board also has a speaker protection circuit. This protection circuit prevents the speaker from being burnt out due to the normal operation of the power amplifier circuit. The relay will not close immediately when the power is turned on, but will be closed after a delay of one to two seconds. , When the midpoint voltage of the power amplifier board is not 0, the relay will be disconnected immediately, cutting off the connection between the power amplifier board and the speaker, thereby protecting the speaker. When the DC level of the power amplifier board returns to normal to 0, the relay will immediately close and the sound is Can work
●The power board adopts 2.0MM fiberglass board, the size of the board is 138×110mm, six 10000UF/50V Japanese ruby or black diamond capacitors, two 104 Taiwan-made polypropylene capacitors, and 25A/1000V imported rectifier bridge. Silver dot relay produced by Japan&x27;s Omron Company