12 Volt 2 Amp Transformerless Power Supply

I have discussed a few transformerless power supply circuits in this blog which are good only with low power applications and tend to become less effective or useless with high current loads.

12 volt 2 amp transformerless power supply. Low voltage dc like 5v 6v 9v 12v is used in electronics circuits led bulbs toys and many household electronics items generally batteries are used to power them but they need to be replaced time to time which is not cost effective and also takes our time energy. Please i am having this issues with transformerless power supply. Its actually a hack and a concept of reuse of scrap. I took out the actual components out of bulb and then replaced it with faulted pcb of adapter and i again got a 12 v adapter which i basi.

Capacitive type is more efficient since its heat dissipation and power loss are very low. Cctv power supply adapter psu 2 amp 2000ma 2 1mm 12v dc 2a us plug adapter 24w 4 5 out of 5 stars 8 8 product ratings cctv power supply adapter psu 2 amp 2000ma 2 1mm 12v dc 2a us plug adapter 24w. This 12 volts transformerless power supply take advantage of the fact that a zener diode is also a normal diode that conducts current in the forward direction. Tmezon 12 volt 2a power adapter supply ac to dc 2 1mm x 5 5mm plug 12v 2 amp power supply wall plug extra long 8 foot cord 4 4 out of 5 stars 2 036 7 99 7.

Find low everyday prices and buy online for delivery or in store pick up. During one half wave the current flows via d1 through the load and back via d4 while during the other half wave it flows via d3 and d2. Resistive type power supply on the other hand dissipates more heat so the power loss is quite high. Each time i intend to use transformerless power supply to power microcontroller 8051 atmega328p and even a dc fan of 12v 1 4a i notice that they never get powered even though the power supply has been tested to produce the required 12v or 5v dc as the case may be.

Transformer less 12v power supply out of led bulb. The two basic types of transformerless power supplies are capacitive and resistive. Here we begin by discussing the drawbacks of capacitive power supply circuits and learn how they may be upgraded to form the ultimate transformerless power supply which may be as effective as its other counterparts yet will be very cheap to build hardly 30 cents as well as compact and lightweight. The above concept utilizes high voltage pp capacitors for dropping the mains voltage to the required level however it is unable to raise current levels as per any desired particular.