Upc1237 Speaker Protection Circuit Diagram. This will save space on the pcb lower the cost of the project and increase the reliability. Using upc1237 for over current protection allows the designer to drop the soa limiting elements in the power amplifier.
Due to some patent issues one can not find a recommended schematic to do the current limiting job in the upc1237 s datasheet. Speaker protection circuit features. Dual channel monitor and protection can be used for stereo amplifiers.
Upc1237 is a bipolar analog integrated circuit made by nec designed for protecting stereo power amplifiers and loudspeakers.
Versatile supply voltage ac or dc in range of 10 15v. Speaker protection with upc1237. Using upc1237 for over current protection allows the designer to drop the soa limiting elements in the power amplifier. In the datasheet it stated that the threshold voltage is 0 67 v and that it need external circuit for overload detection.
