Lab – Discreet component electret microphone preamp
Instead of the transistor BC547 I used the transistor 2N3904331. Instead of a 1K I used a 1.5K resistor.
Category: Analog Circuits
Lab – LED blink with just transistors
LED blink with just transistors I used a 2N2222 transistor and instead of 1K resistor, I used a 1.5K. Secsess!! https://www.youtube.com/watch?v=pITOFGSf3IE
Lab – Motors
Servo motor: Success! Stepper motor: Success! The following picture describe the schematics of a DC motor.
Lab: Amplifier to drive a small speaker
This wee we used the circuit we have built last week and expanded it. In addition, we did some small changes in the previous circuit. The picture bellow depicts the new components that were added to the circuit. After receiving artifacts we a changed the resistor from 10K into 1K. The complete circuit: The following video
Lab 3: Analog amplifiers and operational amplifiers
The following schematics describe the circuit of the amplifier. Since we could not find a 1K resistor we end up using a 1.5K resistor and as Eric said it worked By attaching
LM555 – 555 LED Flasher Circuit
Today we build a LED Flasher circuit. We created blinking LED without using Arduino, by using the capacitor properties (charged and discharged) and an “and gate”. The switch distinguished between voltage differences, if there is no difference (both High) so it is Low and if one is Low and the other one is High the output is High.
Building a Power Suply
The Schematics: The small Pot enables to control the voltage that the power supply supplies. It can vary between 1.3 and 36 Volts.