Transformerless Power supply Circuit - Simple Electronic Project
Components Needed for this Project:
You can get the components from any of the sites below:
- 684j (400v) Capacitor [See Buy Click Amazon]
- 220uF (50v) Capacitor [See Buy Click Amazon]
- 1M Ohm Resistor [See Buy Click Amazon]
- 12V Zener Diode [See Buy Click Amazon]
- 1N4007 Doide [See Buy Click Amazon]
*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!
Related Basic Electronic Mini Project Circuit Diagram:
Frequently asked questions
Definition: A transformerless power supply converts high AC input voltage ( 120V or 230V) to the desired output DC low voltage ( 3V or 5V or 12V) with low current output in milliamps. It is used in low-power electronic applications like LED bulb sets, toys, and household appliances.
While transformers are the most common method for increasing AC voltage, another option is to use a voltage multiplier circuit diagram. A voltage multiplier is an electronic circuit that uses a combination of capacitors and diodes to increase the voltage of an AC input.
You can step the voltage down with a series capacitor or with a switchmode circuit and inductor, but it's usually important for a low-voltage circuit to be isolated from the AC line.
Here's the punchline: transformerless power supplies DC lines are safely useable only in situations where the entire device can be enclosed and nobody can accidentally come in contact with any part of its electronic project.
Touching a 12-volt supply will give a relatively low amperage (in the 'safe' range). Touching a 230-volt supply will give a relatively high amperage (in the dangerous range).
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