| ??? 02/11/04 05:32 Read: times |
#64458 - Inside Pay-phones |
hi,
I was wondering what kind of circuit they use inside payphones to detect coin of particular denomination.Is it an oscillator or some mechanical thing ? What about payphones in Indian cities like mumbai ? |
| Topic | Author | Date |
| Inside Pay-phones | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
| Coin discrimination | 01/01/70 00:00 | |
| RE: Coin discrimination | 01/01/70 00:00 | |
| RE: Coin discrimination | 01/01/70 00:00 | |
| RE: Coin discrimination | 01/01/70 00:00 | |
| RE: Coin discrimination | 01/01/70 00:00 | |
| RE: Coin discrimination | 01/01/70 00:00 | |
| RE: Coin discrimination | 01/01/70 00:00 | |
| RE: Coin discrimination | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
| GB Two Pound Coin | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
| RE: Inside Pay-phones | 01/01/70 00:00 | |
RE: Inside Pay-phones | 01/01/70 00:00 |