RE: basic circuit design help

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Pete Komen by way of Terry Fritz <twftesla-at-qwest-dot-net>" <pkomen-at-zianet-dot-com>

Hello Robb,

Yes.  An automobile taillight may be too much load for the 555.  The
standard 555 can source 200ma maximum.  Look at the following links for 555
info (You can search for "555 timer" on Google).

http://www.uoguelph.ca/~antoon/gadgets/555.htm	555 timer tutorial.

http://www.electronics-tutorials-dot-com/devices/555.htm

Cheers,

Pete Komen
-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Sunday, March 17, 2002 3:21 PM
To: tesla-at-pupman-dot-com
Subject: basic circuit design help

Original poster: "Robb by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<robb-at-kc.rr-dot-com>


i need to design a simple circuit using potentiometers that will allow
for varying
electrical pulses down a line.
Voltage will be low DC, like under 50 volts
very low current.

Is there a way I can do this with a 555 timing chip?
Im not the best at electronic circuits, can anyone help?
I got the idea after looking at an ignition coil driver.
http://www.geocities-dot-com/CapeCanaveral/Lab/5322/coildrv.htm

Can anyone with some basic electronic design take a gander at that
circuit, help
me determine if I can make something similar to that, without the
transistor and the ignition coil?

This will be used to flash with varying duration and delay (2 pots)
lightbults about the size of car taillights.

Thanks
-Robb