<p>This project is intended to provide a mounting spot for a Teensy 4.0 and then send the signals pins to a MOSFET for each of the signal pins 1-12. While also giving a plug to bring in 12V power and 3 RJ-45 connectors to allow the power to be distributed. The assumption is that the total load will be no more than 3A and the MOSFETs will be 100% on at 3.3V</p>
- This circuit is used to control the speed of a 12V motor using a PWM signal.
- The transistors Q1-Q4 are there to invert the signal, to amplify it and to derive the voltage still present at the MOSFET at the moment of switching off. D1 and R6 also serve this purpose.
- D2 terminates the induction voltages of the motor.
- C1 and C2 keep the voltage supply stable.
- MP1 measured against G...
This is a miniature 0.7W amplifier with adjustable bass boost, gain, and volume controls. Uses 1/8" (3.5mm) headphone jacks on the input and output. Powered by USB or 9v (4-12 VDC, max of 15 VDC). I designed it to use film capacitors and Nichicon audio grade electrolytic capacitors wherever possible in order to preserve the signal and reduce noise. An isolated power supply such as a battery is...