Analog circuits project idea help

russpatterson

Joined Feb 1, 2010
353
Do a plesmiograph, (optical heart rate monitor). Plenty of analogue there. Google 'UCSD heart rate monitor' for a good powerpoint on a class project.

Make an anlog synth module that works with the Eurorack format. Google 'Astable multivibrator' and put pots for the resistors. You'll have an interesting noise maker in no time.

Make an audio amp.

Make a linear solar charge controller.
 
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PaulEE

Joined Dec 23, 2011
423
Excellent ideas, thanks.
An electrometer/null meter is a very interesting experience, also.

Try sensing 10 microvolts with a 741. When you realize that the gain resistors need to be so high that the opamp itself causes the entire circuit to not work, start asking questions. Eventually, you'll settle on an LMC6001 for its superior input bias currents (or lack thereof), ridiculously-high input impedance, low offset voltage/current, and profoundly low current noise.

A month later, you'll have learned a TON about a TON.

:)
 

thatoneguy

Joined Feb 19, 2009
6,359
Telescope tracking drive for equatorial mount
Solar tracking for solar panels
5 band parametric equalizer for audio
3 band active crossover with adj bass boost on lowest output
Electrostatic speakers (more mechanical than electronic)
A decent Bi-Amp speaker system for computer, w/sub and surround decoder

Get an LM741 Op Amp to have a flat frequency response from DC to 30kHz. :eek::D
 

PaulEE

Joined Dec 23, 2011
423
Telescope tracking drive for equatorial mount
Solar tracking for solar panels
5 band parametric equalizer for audio
3 band active crossover with adj bass boost on lowest output
Electrostatic speakers (more mechanical than electronic)
A decent Bi-Amp speaker system for computer, w/sub and surround decoder

Get an LM741 Op Amp to have a flat frequency response from DC to 30kHz. :eek::D
+1 on the 741 comment! :p
 
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