Telephone Switching > General Switching Discussions

Sub-cycle Power Supply

(1/1)

poplar1:
If you need a power supply with 20-cycle ringing, there is one listed on Ebay:

http://www.ebay.com/itm/161043046150

20-cycle sounds more authentic than the more common 30-cycle.

The seller is in Canada.

Navigation

[0] Message Index

Go to full version