🚀 go-pugleaf

In article <1395@crash.CTS.COM> rpluth@pnet01.CTS.COM (Ron Pluth) writes:
>
>    1.  What's the easiest way to go about interfacing a TTL
>output (from, say, a standard S or LS AND gate) to a relay, for
>controlling anything from automobile (12VDC) to house (120VAC)
> ...

One effective way to convert from logic levels (including LS and CMOS)
to power levels appropriate for driving relays is to use VMOS transistors.
Like CMOS logic they do not require any extraneous drive current in either
the 'on' or the 'off' state.  Radio Shack used to carry some, I have not
checked recently.