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AC to DC Power Supply with Voltage Regulation and Multimeter Monitoring

Image of AC to DC Power Supply with Voltage Regulation and Multimeter Monitoring

Circuit Documentation

Summary of the Circuit

This circuit appears to be a power supply unit that takes an AC input and converts it to a regulated DC output. The AC supply is first transformed to a lower voltage level, then rectified by a bridge rectifier. The resulting pulsating DC is smoothed by an electrolytic capacitor. Finally, a 7808 voltage regulator is used to provide a stable 8V DC output. A multimeter is included in the design for measurement purposes.

Component List

Bridge Rectifier

  • Description: A bridge rectifier is a device that converts an AC input into a DC output.
  • Pins: Source_in-, source_out-, source_out+, source_in+

AC Supply

  • Description: An AC supply provides an alternating current source.
  • Pins: +ve, -ve

Transformer

  • Description: A transformer is used to step down or step up the voltage level.
  • Pins: 5, 1, 2, 3, 4

Electrolytic Capacitor

  • Description: An electrolytic capacitor is used for filtering and smoothing the rectified DC voltage.
  • Pins: -, +
  • Properties: Capacitance: 0.00047 Farads

7808 Voltage Regulator

  • Description: A 7808 is a voltage regulator that outputs a constant 8V DC.
  • Pins: INPUT, GND, OUTPUT

Multimeter

  • Description: A multimeter is used to measure electrical properties such as voltage and current.
  • Pins: COM, V, A

Wiring Details

Bridge Rectifier

  • Source_in-: Connected to pin 5 of the Transformer.
  • source_out-: Connected to GND of 7808, COM of Multimeter, and - of Electrolytic Capacitor.
  • source_out+: Connected to INPUT of 7808 and + of Electrolytic Capacitor.
  • source_in+: Connected to pin 3 of the Transformer.

AC Supply

  • +ve: Connected to pin 1 of the Transformer.
  • -ve: Connected to pin 2 of the Transformer.

Transformer

  • Pin 5: Connected to Source_in- of Bridge Rectifier.
  • Pin 1: Connected to +ve of AC Supply.
  • Pin 2: Connected to -ve of AC Supply.
  • Pin 3: Connected to source_in+ of Bridge Rectifier.

Electrolytic Capacitor

  • -: Connected to source_out- of Bridge Rectifier, GND of 7808, and COM of Multimeter.
  • +: Connected to source_out+ of Bridge Rectifier and INPUT of 7808.

7808 Voltage Regulator

  • INPUT: Connected to source_out+ of Bridge Rectifier and + of Electrolytic Capacitor.
  • GND: Connected to source_out- of Bridge Rectifier, - of Electrolytic Capacitor, and COM of Multimeter.
  • OUTPUT: Connected to V of Multimeter.

Multimeter

  • COM: Connected to source_out- of Bridge Rectifier, GND of 7808, and - of Electrolytic Capacitor.
  • V: Connected to OUTPUT of 7808.
  • A: Not connected in the current configuration.

Documented Code

There is no embedded code provided for any microcontrollers in this circuit. Therefore, this section is not applicable to the current documentation.