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Audio devices - list of circuit diagrams
A low noise pre-amplifier suitable for amplifying dynamic microphones with 200 to 600 ohm output impedance
author: Andy Collinson visits: 187 
A low voltage preamplifier optimised for 3 Volt operation
author: Andy Collinson visits: 174 
A classic Wien Bridge oscillator using an Op-Amp covering a frequency range of 15 to 150kHz in four switched steps
author: Andy Collinson visits: 172 |
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