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Posts tagged electret mic preamp circuit balanced outputs

Microphone Circuit with tone control

Microphone Circuit with tone control using TL072

Portable Mic Pre-amp 2 transistor

Portable Mic Pre-amp 2 transistor using BC549C, BC547B

Servo Motor Controlling with trimpots

Servo Motor Controlling with trimpots Servo Motor Controlling with trimpots

Printed Circuit Board Design and Method

An apparatus and method for providing a vented blind via in pad of a printed circuit board (PCB). A vent in the blind via in pad to allow gases formed during reflow soldering to escape from the solder joint. In one embodiment, the vent extends from the outer edge of the pad to the blind […]

Microphone circuit

Microphone circuit

Audio amp

Audio amp using BC556, BD830, BC548, BC556A, BDV67c, BDV66c

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