Circuit knowledge

As my article about  Power Supply Circuit 11.8V(12V) is equipped with the scheme, it can only be applied only to one is 12V output voltage only. All equipment that requires 12V Power Supply can use that Power Supply, for example; to turn on the car tape installed in your home without use of batteries.

What if there are your electronic devices that require 5V power supply while you are not there ADAPTER 5V power supply.
This can be overcome by assembling the Power Supply 0 to 15 Volts Adjustable Output. 

or called Power supply multifunction.

Lets check scheme

Power Supply 0 - 15 Volts Adjustable Output.

The construction of this Power Supply Circuit is incredibly straightforward in such the simplest way that the elements used area unit straightforward to be settled whereas the value is incredibly low cost. With the largest provided current at one A, the output voltage is adjusted for minimal  ripple result and stable within the vary of zero V to fifteen V DC. This is often created attainable by the quality electrical device output of one.5 A with a primary voltage of 220 V and secondary voltage of eighteen V. the present is being restricted by the Zener diode D1 with a rating of eighteen V and one.5 W. The linear potentiometer R2 is liable for the regulation of current.

2N3055 – a complementary atomic number 14 Epitaxial-Base planar NPN electronic transistor|electronic transistor|semiconductor device|semiconductor unit|semiconductor} mounted in Jedec TO-3 metal case to be used as power Transistor
Bridge Diode – additionally referred to as bridge rectifier that has four diodes organized in a very bridge configuration wherever the output voltage has identical polarity with either polarity of the input voltage

The Power semiconductor Q1 may be a classic sort that might need to be placed in a very appropriate heatsink to suppress the high temperature reduction throughout the operation of the schema. the warmth dissipation are continuous throughout the presence of the best current. The bridge diode GR1 can offer full wave rectification from the AC input which can additionally convert the incoming electricity (AC) input into electricity (DC) output. One smart feature of the bridge diode is maintaining identical polarity of the output notwithstanding the polarity of the input.

The 15V an influence provide is also accustomed handle home automation system which may be supercharged by twelve V DC. they will be created into power adapter models to support a good form of applications like TFT monitors, transmitter,  notebook, camera digital , telecommunications, PSP, routers, stringed instrument Guitar effects, extenders, iPod’s, scanners, CCTV, printers, container players, radios, etc.

4 X 15 Watt Mini Power Amplifier Circuit diagram :

Notes :

• Assembling the schema on a good quality PCB is a must for obtaining optimum sound quality.
• Use 12V DC for powering the schema.
• The ICs must be fitted with adequately sized heat sinks.
• R3, R4, R12 and R13 serves as volume controllers.
• K1 to K4 can be 4 Ohm, 20W speakers.
• This amplifier schema can be used in a variety of applications such as car audio systems, home theater systems, personal audio systems, public address systems etc.