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2025-02-16 13:52:06 +01:00
---
title: Single Transistor Oscillator
BOM:
- "2x 10uF Capacitor"
- "x 10Ohm Resistor"
- "2x 9V Battery & Clips"
pcb: "/recipes/SingleTransistorOsc/PaperCircuit.svg"
---
This circuit converts a 9V power source into a stable 5V output, suitable for powering low-voltage circuits like microcontrollers, sensors, and small audio devices. It ensures a clean, regulated voltage with minimal noise, preventing fluctuations that could interfere with sound circuits.
Instructions:
Prepare Components: Gather all components and ensure they match the schematic.
Place the 7805 Regulator: Position the 7805 with its flat side facing you. The left pin is input (9V), the middle pin is ground, and the right pin is output (5V).
Add Capacitors: Connect a 10µF capacitor between the input pin and ground, and another between the output pin and ground. These smooth out voltage fluctuations.
Install the Diode: Place the 1N4007 in series with the power input to prevent accidental reverse polarity damage.
Connect Power: Attach a 9V battery clip or a DC jack to the input.
Test Output: Use a multimeter to verify that the output is a stable 5V.
Mount on PCB or Paper Circuit: If using a PCB, solder components as per the schematic. If using a paper circuit, glue aluminum or copper tape for traces and attach components using conductive paint or wire bridges.
Final Check: Before connecting sensitive circuits, double-check polarity and voltage output to avoid damage.
```{.include
BOM.csv
```