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Circuit Examples - index.


Index of pages in Poul's circuit examples

Current sources
Key specifications for some current source circuits.

White noise generator
Linear white noise generator for the audio bandwidth.

Pink noise filter
Accurate pink noise filter for the audio bandwidth.

2 transistor buffer
Emitter follower circuit with improved drive capability.

Signal rectifiers
Full wave signal rectifiers for low frequency signals.

Logarithmic amplifiers
Logarithmic amplifiers with wide dynamic range for low frequency applications.

DI box
Schematic for a common DI box circuit and schematic and specification for a higher performance circuit.

I2C bus isolators
Schematics for some simple I2C bus isolators and for a galvanically isolated one.

Spice filter models
A collection of some standard transfer functions for use with Spice simulators.

Increasing OP-AMP output current
A simple way to increase the output current of an OP-AMP.

DIY MC pre-amplifier
Simple DIY MC pre-amplifier.

Astable multivibrator
Frequency and duty-cycle calculation for simple astable multivibrator built around an OP-AMP or comparator.

V Line
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Index
Current sources
White noise generator
Pink noise filter
2 transistor buffer
Signal rectifiers
Logarithmic amplifiers
DI box
I2C bus isolators
Spice filter models
Increasing OP-AMP output current
DIY MC pre-amplifier
Astable multivibrator
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