14Vdc at 2Watt Switching Power Supply Circuit

The work of the power supply is the gain of 2N3053 2N3906 and 2N3904 is fixed internally at 2Watts.

2W switch power supply circuit

It is to compensate the reduction of output power due to low voltage supply the transistor uses the Bridge-Tied-Load principle (BTL) which can provide an output of around 1.5 to 2 W at 14Vdc with a power supply of 6 V.

For the circuit the potentiometer can be used to control the voltage. Capacitor C1 and C2 are meant for filtering the supply voltage if a battery eliminator is used as supply source. For operations using a battery C1 and C2 are no necessary.

The work of the power supply is the gain of 2N3053 2N3906 and 2N3904 is fixed internally at 2Watts.
It is to compensate the reduction of output power due to low voltage supply the transistor uses the Bridge-Tied-Load principle (BTL) which can provide an output of around 1.5 to 2 W at 14Vdc with a power supply of 6 V.

For the circuit the potentiometer can be used to control the voltage. Capacitor C1 and C2 are meant for filtering the supply voltage if a battery eliminator is used as supply source. For operations using a battery C1 and C2 are no necessary.

Figure 1 gives a stripboard layout for the 6V regulated power supply shown in figure 1.
The layout does not include the transformer block, so the input to the board needs to be 6V AC from a suitable transformer. 
The layout includes space for two optional 2-way screw terminal blocks to make connecting up the power supply easier.

If the input voltage is 6V AC, you will be able to draw 1A from the power supply.  For the maximum input voltage of 14V you will be able to draw 2W.