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Compound Op Amp Vco Driver

2017-09-05 14:13  
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This circuit produces 5- to 25-V output to drive a VCO from a standard ?± 15-V supply system. R7 and CI supply fr
Compound Op Amp Vco Driver

equency compensation. Ql through Q3 form an inverting amplifier with a gain of two. Negative feedback through R2 closes the loop. This circuit can act as a an active load-log filter and directly drive a voltage-controlled oscillator.

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