Wanted to make a pH sensor? Make a noise-canceller? Make a custom equalizer? Mini microphones?
Improve your circuitry with this intro to Analog Circuit Design -- with focus on Op Amps, Instrumental Amplifiers, analog comparators, and opto-isolators.
- inverting amplifier (simple volume control)
- non-inverting amplifier (simple buffer, and amplifier)
- summing-amplifier (single speaker multiple tones)
- differential amplifier (matched pair analysis)
- bridge amplifier (force sensor)
- logarithmic amplifier (compressor)
- frequency filter
- Music: compressor
- Music: fuzz
- Music: phasor
- Music: make-an-instrument
- Science: pH Sensor
- Science: Soil Moisture Sensor
- Science: Light Sensor
- Science: Strain Gauge Sensor
- Science: Thermopile sensor
- Science: Oxygen Sensor
- Cool: Alpha-Wave-Detector
- Robotics: Force-Feedback-sensor
- Robotics: Frequency sensor (whistle-bot)
- Robotics: Opto-coupling
- Embedded: single-supply RR op Amps
Myth: hardware is expensive Fact: IC samples are free (especially if you can solder)
- RR Op Amp, a few suggestions, a few sample sites
- ultra-high input impedence, low offset usage
- instrumental amplification (pricey, lower bandwidth but very powerful for medical applications)
- High power op amps
- Analog Comparators -- do the job.
- create md-doc with sample diagrams of the most important (IMO) op amp configurations
- create md-doc with description of op-amp limitations/"non-idealities" and what applications they are important concerns
- create md-doc to create a set of projects each common topology