hummy Posted September 23, 2005 Report Share Posted September 23, 2005 Pl's, I hv already bought all d necessary components, remaining d telephone and the transformer. I want 2 know what kind of T/F is 1k/8R & d kind of telephone 2 use, will Orpat telephone, MODEL: 1010 or 2318 be o.k 4 use & what kind of T/F 2 use. I'll be very glad if anyone can respond as quikly as possibleTHANKS IN ADVANCE Quote Link to comment Share on other sites More sharing options...
audioguru Posted September 23, 2005 Report Share Posted September 23, 2005 The transformer was used in transistor radios years ago. It is small and has a 1000 ohm primary and an 8 ohm secondary. Most electronics suppliers have Japanese ones for a couple of dollars. Quote Link to comment Share on other sites More sharing options...
hummy Posted September 24, 2005 Author Report Share Posted September 24, 2005 Audioguru, thanks 4 d reply. What about d telephone to be usedTHANKS IN ADVANCE Quote Link to comment Share on other sites More sharing options...
audioguru Posted September 24, 2005 Report Share Posted September 24, 2005 I just noticed that the transformer's 1k primary must be center-tapped. It is fairly common.I don't know your phones but this project uses phones with a pulse dialer or an old-fashioned rotary dial. A different project uses phones with a DTMF touch-tone dialer. Quote Link to comment Share on other sites More sharing options...
hummy Posted September 24, 2005 Author Report Share Posted September 24, 2005 if not an old paulse dial phone, no new modern phone could be used?????????thanks Quote Link to comment Share on other sites More sharing options...
audioguru Posted September 24, 2005 Report Share Posted September 24, 2005 In the project it tells you what type of phone to use.There are other Link intercom telephone projects in our Projects Section. At least one of them uses phones with a DTMF touch-tone dialer. ;D Quote Link to comment Share on other sites More sharing options...
hummy Posted September 24, 2005 Author Report Share Posted September 24, 2005 Pl's can someone help me out.I am building d link telephone intercom and i want 2 know if orpat 1010 or 2318 will do instead of d old phone, which is rare 2 obtain.thanks Quote Link to comment Share on other sites More sharing options...
hummy Posted September 24, 2005 Author Report Share Posted September 24, 2005 Audioguru thanks 4 d reply, seems i'll try other projects if i couldn't find d old paulse dial phone type. Pl's i'll like 2 hv ur email address, in case i need any assistance, can i contact u?THANKS AGAIN Quote Link to comment Share on other sites More sharing options...
ante Posted September 24, 2005 Report Share Posted September 24, 2005 HERE YOU CAN FIND A BOOK ABOUT PHONES: http://www.electronics-lab.com/forum/index.php?topic=4014.0 Quote Link to comment Share on other sites More sharing options...
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