Circuits that techies need ?

I'm thinking of developing a product line of circuits that 'techies',
educators, science researchers, and some engineers could use.

I'm asking for your suggestions.

What I'm thinking of so far is simple analog circuit boards, populated
with SMT components, that are adjustable (can be tweaked over a wide
range). Basic op amp, comparator, instrumentation amps, filters,
differential versions, wideband versions, etc.
In two forms; Bareboard with trim pots, switches, and screw terminal
conection, and enclosed versions with standard controls and banana or
bnc/sma connections.

Of course, most 'techies' make their own circuits, but I could see
junior engineers and scientists enjoying the luxury of having a simple
'development' board they can try and tweak in their system rather than
spend too much money or time.
Those are my ideas.

It would be interesting, very interesting, to see what kind of circuits
you folks think might be viable. It doesn't have to be simple.

What do you think ?

.

Relevant Pages

  • Re: Taking precautions during experimenting
    ... engineers do, ... Normally electrons with a KE of ~2V pose ... from 9 to 5 telling the guys that really do make the circuits how its done? ... or those I know to help youngsters today avoid making those same mistakes. ...
    (sci.physics)
  • Re: Taking precautions during experimenting
    ... engineers do, ... Normally electrons with a KE of ~2V pose ... from 9 to 5 telling the guys that really do make the circuits how its done? ... or those I know to help youngsters today avoid making those same mistakes. ...
    (sci.physics.relativity)
  • Re: Any good how-tos out there on understanding schematics?
    ... circuits - digital and analog. ... Analog circuits appear in power supplies, sound boards, driver boards ... Signals have complete ... engineers are quite rare compared to digital engineers. ...
    (rec.games.pinball)