mikescraigslist Posted August 6 Share Posted August 6 (edited) Hi guys, I snapped the plastic on the DC power socket by accident so need to source replacement parts. The mating power plug is 2.1mm centre positive, so I guess the power socket must also be centre positive? Would a socket with the following schematic be suitable? I am not sure how to read the polarity. Thanks Edited August 6 by mikescraigslist Link to comment Share on other sites More sharing options...
mwhouston Posted August 6 Share Posted August 6 9 minutes ago, mikescraigslist said: Hi guys, I snapped the plastic on the DC power socket by accident so need to source replacement parts. The mating power plug is centre positive, so I guess the power socket must also be centre positive? Would a socket with the following schematic be suitable? I am not sure how to read the polarity. Thanks Jatycar, but there are three or more different sizes. Link to comment Share on other sites More sharing options...
mikescraigslist Posted August 6 Author Share Posted August 6 Ah yes. The power plug is 2.1mm centre positive. I see Jaycar only sell one type of 2.1mm socket. Does that mean the socket itself has no polarity, so any can be used? https://www.jaycar.com.au/21mm-pc-mount-male-dc-power-connector/p/PS0519 1 Link to comment Share on other sites More sharing options...
mwhouston Posted August 6 Share Posted August 6 2 hours ago, mikescraigslist said: Ah yes. The power plug is 2.1mm centre positive. I see Jaycar only sell one type of 2.1mm socket. Does that mean the socket itself has no polarity, so any can be used? https://www.jaycar.com.au/21mm-pc-mount-male-dc-power-connector/p/PS0519 The polarity is decided in the live end, the bit you plug in. These days centre pin is generally positive. 1 Link to comment Share on other sites More sharing options...
muon* Posted August 6 Share Posted August 6 If It's chassis mounted you choose how you connect, if It's PCB mount it needs to comply with the way it is connected on the PCB. 2 Link to comment Share on other sites More sharing options...
mikescraigslist Posted August 7 Author Share Posted August 7 16 hours ago, mwhouston said: The polarity is decided in the live end, the bit you plug in. These days centre pin is generally positive. 16 hours ago, muon* said: If It's chassis mounted you choose how you connect, if It's PCB mount it needs to comply with the way it is connected on the PCB. Yes the plug on the live end is centre positive. Of this I am sure. What I am not so sure about is how to pick the right matching socket connector to go on the amplifier PCB (at location CN1). I had hoped that the socket itself is "dumb" and polarity is determined by the PCB layout. If so, I should be able to use any 2.1mm socket with 3 pins and it should work. I had been Googling but hadn't been able to find a definitive answer to this. 1 Link to comment Share on other sites More sharing options...
muon* Posted August 7 Share Posted August 7 Maybe de-solder the old one and use it as a reference. 1 Link to comment Share on other sites More sharing options...
mwhouston Posted August 7 Share Posted August 7 1 minute ago, mikescraigslist said: Yes the plug on the live end is centre positive. Of this I am sure. What I am not so sure about is how to pick the right matching socket connector to go on the amplifier PCB (at location CN1). I had hoped that the socket itself is "dumb" and polarity is determined by the PCB layout. If so, I should be able to use any 2.1mm socket with 3 pins and it should work. I had been Googling but hadn't been able to find a definitive answer to this. Any should work. Some cct. bds. have a single diode in the power cct. to protect the brd. from reverse voltage. 1 Link to comment Share on other sites More sharing options...
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