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Chris wrote:
> By the way, if you want a simple transistor circuit for your one minute
> delay, and you happen to have a 10,000 uF cap and a 10K pot handy, you
> might want to try this (view in fixed font or M$ Notepad):
> <snip>
> Good luck
> Chris
OK -- Let's save the switch by discharging the 10,000uF cap through a
diode and a series resistor.
|
| SW1
| VCC-o
| __--o-o-------o-------.
| GND-o | | |
| | | |
| | .-. |
| | .-->| |10K |
| | | | | |
| D - | '-' |
| ^ | | |
| | '----o |
| .-. | |
| 100 | | .-. |
| | | 1K| | |
| '-' | | .---o
| | '-' | |
| | | |/ |
| '-------o-| |
| +| |> |
| 10,000 --- | |/
| uF --- '-| TIP101
| | |>
| | |
| === .--o
| GND | |
| D| C|
| - C|RY1
| ^ C|
| | |
| ======
| GNDGND
|
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(created by AACircuit v1.28.6 beta 04/19/05 www.tech-chat.de)
Chris
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