4 ms·
If you are referring to the large transformer clearly visible in the first photo at the top, that is most likely the AC mains transformer that supplies power to
by pwg 8y ago
If you are referring to the large transformer clearly visible in the first photo at the top, that is most likely the AC mains transformer that supplies power to the modem. This device would have been built before the days of switching power supplies, and linear power supplies (esp. 50 year old ones) often begin with a step down transformer of about that size
- tyingq 8y agoGuessing this board is the bridge rectifier and DC voltage divider that comes right after the transformer: https://hackadaycom.files.wordpress.com/2019/03/pwr2.jpg https://hackadaycom.files.wordpress.com/2019/03/pwr2.jpg
- pwg 8y agoThat was my guess as well, given the four diodes on the right edge.
- csours 8y agoDon't modern amps also have coil transformers?