delton@pro-carolina.cts.com (System Administrator) (01/08/90)
I have a bad transformer for an EPIC 2400 baud external modem. It uses a
strange one just like the one that came with my Practical Periphs 2400
external... i.e. a 9 volt AC output instead of the usual DC output. Anyone
know where I might find one of these? All of the universal converters I've
seen in places like Target, Walmart, or Radio Shack have DC only output.
I'd hate to have to trash another modem for lack of a power cable. Thanks.
(please email replies if you saw this on info-apple).
UUCP: [ sdcsvax nosc ] !crash!pro-carolina!delton
ARPA: crash!pro-carolina!delton@nosc.mil
INET: delton@pro-carolina.cts.com
Pro-Carolina: 803-776-3936 (300-2400 baud, login as 'register')
US Mail: 3207 Berkeley Forest Drive, Columbia, SC 29209-4111
CIS: 72010,37 MCI: 351-9930 GEnie: deltonsb@pro-generic.cts.com (Stephen Brown) (01/14/90)
In-Reply-To: message from delton@pro-carolina.cts.com If you need 9 volts AC, then why not just buy a small step down transformer? Unfortunately, the only one that Radio Shack has that might be useful is a 18 volt c.t. transformer, but it can supply 3 amps or something... a bit of an overkill. Radio Shack #273-1515 costs about $13 CDN, and you'd use the centre wire (the C)entre T)ap) plus one of the outer ones. That with an AC line cord (eg. Radio Shack #278-1255) in a small box would create an adapter that would be higher quality than any prefab adapter that you could buy. Just snip off the connector from the old, dead adapter. I don't work for Radio Shack, but once in while, I buy from there. UUCP: crash!pro-generic!sb ARPA: crash!pro-generic!sb@nosc.mil INET: sb@pro-generic.cts.com
w0033@desire.wright.edu (01/22/90)
You might be able to crack open a regular DC power supply and remove the bridge rectifier. Normally the circuit has the 120v line go into a transformer, which then has a capacitor and a couple diodes to make the AC transformer output into DC. By removing the bridge, and I guess the cap also, you will basicly have 9v AC output. To make it save though you should reclose the case again by gluing it shut. I cracked one open just to fix one time (the plastic moldes cheapie type) and there really wasn't much to it.