| ??? 11/14/07 16:01 Read: times |
#146961 - 120V ac 60Hz from 230V ac 50Hz |
The required rating for the above conversion is just 5W.
The product that is causing me this headache is a clock bought in the USA by my friend. And she is of the opinion that the Blue display is sooooo cooool. When plugged into the mains with only a step down transformer the clock looses time like crazy as it uses the mains frequency as clock source. So how to get this 120V - 60Hz from a 50Hz source ? Maybe a precision sine oscillator and feed the output to a power amplifer to get the 5W rating ?? Or does this too complex for a clock ? My friend says its just a week end job for me. Maybe its flattery but I guess I need to live up to that ! ANy ideas welcome. Raghu |
| Topic | Author | Date |
| 120V ac 60Hz from 230V ac 50Hz | 01/01/70 00:00 | |
| Go back to the USA... | 01/01/70 00:00 | |
| For a clock? | 01/01/70 00:00 | |
| I know of quartz stabilized inverters | 01/01/70 00:00 | |
| Thanks for the ideas.. | 01/01/70 00:00 | |
| I confess, the idea with the camping inverter... | 01/01/70 00:00 | |
| Kai - I know what you meant | 01/01/70 00:00 | |
| Kai - I know what you meant | 01/01/70 00:00 | |
| Look at the chip inside | 01/01/70 00:00 | |
| done that many times | 01/01/70 00:00 | |
| That was so kind of you. | 01/01/70 00:00 | |
| Maybe you could take a photo of the innards... | 01/01/70 00:00 | |
| OK will post the photo of the innards... | 01/01/70 00:00 | |
| Are you allowed to open the clock? | 01/01/70 00:00 | |
| Buy an Inverter | 01/01/70 00:00 | |
| Alternative | 01/01/70 00:00 | |
| Another alternative | 01/01/70 00:00 | |
| Phase lock loop | 01/01/70 00:00 | |
| Brilliant! | 01/01/70 00:00 | |
| 50 percent duty cycle | 01/01/70 00:00 | |
| Horses for Courses | 01/01/70 00:00 | |
| ??? | 01/01/70 00:00 | |
Avoid butchering the clock | 01/01/70 00:00 |