I need a circuit that will turn one thing on when power is applied then that off and another thing on when power is applied again. Then the second thing off and a third thing on when power is applied again. Then the last thing off when power is applied a fourth time.
2006-12-19 08:51:40 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
You could do this with a series of latching relays, I think. A counter would do it, as well. Use the counter output to drive relays to actually switch your power.
2006-12-19 09:08:23 · answer #1 · answered by www.HaysEngineering.com 4 · 1⤊ 0⤋
How about using a microcontroller with built in EEPROM. The EEPORM is checked at power up to look at the last I/O state. The outputs are updated with a new state based upon the previous state and finally the updated state is saved to EEPROM for the next power up.
This assumes you are completely removing power from the entire circuit. It is even easier if you are cycling power on just an input pin as you won't need to use the buildt in EEPROM.
Check out the ATMEL data sheets on their ATtiny series uC which have built in RC clocks.
2006-12-19 17:28:05 · answer #2 · answered by MarkG 7 · 0⤊ 0⤋
You need a shift register with clock related to power. assuming you have a separate power for you switch.
2006-12-19 16:57:06 · answer #3 · answered by Anonymous · 0⤊ 0⤋