Descrizione
Circuit Diagram https://rb.gy/3muyf7
Voltage Tester Main https://rb.gy/ac5ci8
A quick guide about transformerless power supply is here. In this video we are goging to explain a transformerless power supply with multi outpus.
Transformerless power supply or capacitor droper is the most common type of power suppy for cheap electronics gadgets.
Table of contacts of this lecture are:
- Block Diagram of Transformerless power supply
- Formula's used for design of Transformerless power supply.
- Example for under stand the formula's.
A - The block diagram consists the following components:
Series Resistor or current limiting resistor
X-rated Capacitor
Bridge Rectifier.
Bleeder Resistor
Filter unit
Voltage regulator .
series resistor limit the harmonics of switching.
X-Rated capacitor is use to step down the voltages and current.
Bleeder resistor is used to provide the reverse path of capacitor charges after switch off the power supply.
Bridge rectifier is used to convert AC voltage into pulsating DC voltages.
the filter unit is used to purifie the DC and
the last unit or regulator is used to reduce the variation of the power supply voltages.
The formula that used to calculate the voltages for this power supply
z=((Vrms*1.4142)-Vout)/output current
c=1/(2*3.1416*f*xc)
here
z is the impedance , c is the capacitance , Xc is the capacitive reactacnce of the capacitor and f is the supply frequency .
https://www.youtube.com/watch?v=uB7hI0Fj1P8
https://www.youtube.com/watch?v=uB7hI0Fj1P8