Am Samstag, 7. April 2007 15:50 schrieb Sven Geggus:
> Jan Kandziora <[EMAIL PROTECTED]> wrote:
> > Solid state relays, e.g. by OptoZZ or similar behave as a LED on
> > low voltage side. If you like to build such a thing yourself, try
> > e.g. MOC3043.
>
> I think that a mechanical Relay Output would better suited for my purpose
> than a solid state relay.
>
> I would like to be able to switch full 230V/16A european mains supply
> without an additional fuse added thus a solid state relay solution would
> require the installation of a very big heat sink.
>
Sure. Rule of thumb says 1 W/A.
> All I need is a suggestion for some working PNP transistor circuit.
>
NPN, please. Interfacing NPN and PNP logic requires additional magic. In
addition, PNP is no help in any case.
+Vrel -+---+---+
| | |
| | ---
10k REL ^ 1N4001
| | |
| | |
| +---
| |
| |/C
Vout --+-| BD237
|\E
|
GND -------+
Note the inverted logic. If you need positive logic, you have to add another
10k-Transistor circuit:
+Vrel -+---+---+---+
| | | |
| | | ---
10k 10k REL ^ 1N4001
| | | |
| | | |
| | +---
| | |
| | |/C
| +-| BD237
| | |\E
| | |
| |/C |
Vout --+-| | BC547
|\E |
| |
GND -------+---+
Kind regards
Jan
--
Je tiefer der Abgrund, desto höher der Himmel.
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