| ??? 11/15/04 10:48 Read: times |
#81159 - RE: How to turn ON/OFF power!! Responding to: ???'s previous message |
All of the above!!
Depending on the device, a variety of techniques are used: things like RS232 interfaces can be powered down backlights dimmed or turned off cpu speed slowed down on some chips - sections can have the clock reduced or turned off to save power In regards to 8051 type cpus - most of them can be put into a sleep mode to decrease current and an external input can wake them up again (eg: power on button) or a timer activates the micro briefly so it can check if it needs to run. As for your 'solid state switch' - fets and transistors can perform the power on/off function. Do you have a more specific question? |
| Topic | Author | Date |
| How to turn ON/OFF power!! | 01/01/70 00:00 | |
| RE: How to turn ON/OFF power!! | 01/01/70 00:00 | |
| pwr on/off a device with shared input | 01/01/70 00:00 | |
| RE: pwr on/off a device with shared input | 01/01/70 00:00 | |
| RE: pwr on/off a device with shared input | 01/01/70 00:00 | |
| RE: pwr on/off a device with shared input | 01/01/70 00:00 | |
| Schematic / Demo available below | 01/01/70 00:00 | |
| RE: Schematic / Demo available below | 01/01/70 00:00 | |
| Any comment on the about circuit? | 01/01/70 00:00 | |
| RE: Any comment on the about circuit? | 01/01/70 00:00 | |
| RE: Any comment on the about circuit? | 01/01/70 00:00 | |
| RE: How to turn ON/OFF power!! | 01/01/70 00:00 | |
| I agree with Charles | 01/01/70 00:00 | |
| simplest power on/off | 01/01/70 00:00 | |
| Another method | 01/01/70 00:00 | |
| it was an example | 01/01/70 00:00 | |
| it was an example | 01/01/70 00:00 | |
| Another power on/off technique | 01/01/70 00:00 | |
| Yet alternatively | 01/01/70 00:00 | |
My own method of this... | 01/01/70 00:00 |