upc1237 PROTECTOR IC FOR STEREO speaker protektor Jedug jadi hilang

@radal05 upc1237 PROTECTOR IC FOR STEREO speaker protektor link pembeliaan: 1.IC UPC1237HA C1237HA C1237 uPC1237 Power Amplifier Speaker Protector 2.PCB Speaker Protector Stereo IC UPC1237 Proteksi Protektor Pengaman Datasheet : file:///E:/1%20radal05/382,1237/UPC1237-UTC.pdf DESCRIPTION UTC UPC1237 is a semiconductor integrated circuit designed for protecting stereo power amplifiers and loudspeakers. FEATURES * Wide supply voltage range of 25V~60V. * Contain a relay driver. (Max. I6=80mA) * Work as either latching function or automatic resetting function by using pin 3. (In both overload detection and output offset detection, either function can be selected.) * Single power supply. * Built-in output offset detection function. Both positive and negative output offset can be detected through pin2. * AC voltage can be detected. * Time delay function. The time delay form amplifier power ON to relay ON can be freely set by selecting external components. * The moment that amplifier-power is turned off, it can make relay broken OFF and then loudspeaker disconnected for amplifier to 00:00 Radal05 00:25 Syarat proteksi amplifier 01:40 Data sheet upc1237 03:00 Skematik tes sederhana 04:50 Fungsi PIN 05:50 Tes delay