Wiring Schematic Diagram

This voltage converter circuit is built with TL497A and converts an input voltage of 5 to 12 voltage to a higher level of 15 - 30 volts. This is specially helpfull in mobile applications where power supply levels are commonly limited to 12 volts supplied by batteries.

TL497A Simple Voltage Converter Circuit

If you want a 1.5V to 5V Step-Up Converter here is a simple circuit using LT1073 from Linear Technology. The LT1073 is a versatile micro-power DC / DC converter. The circuit requires few external components to deliver a fixed output of 5V.

1.5V to 5VDC Converter Circuit by LT1073

LT1073 Pinout

The very low minimum supply voltage of 1V allows the use of the LT1073 in applications Nowhere the primary power source is a single cell. An on-chip auxiliary gain block cans function as a low battery detector or linear post-regulator.The LT1073 is good idea, it Used for dc to dc converter.Average current drain of the LT1073-5 Used as shown in the Typical Application Circuit below is just 135mA unloaded, making it ideal for applications Nowhere Long battery life is Important. The circuit shown cans deliver 5V at 40mA from an input as low as 1.25V and 5V at 10mA from a 1V input.

Here is a simple 12 V to 220V inverter for using a small aplications in the absence of mains supply. It uses eight transistors and a few resistors and capacitors. Transistors T1 and T2 form an astable multivibrator that produces 50Hz signal. The complementary outputs from the collectors of transistors T1 and T2 are fed to pnp Darlington driver stages formed by transistor pairs T3-T5 and T4-T6. The outputs from the drivers are fed to transistors 2N3055 (T7 and T8) connected for push-pull operation.

A 230V AC primary to 12VCT/4.5A secondary transformer is used. The centre-tapped terminal of the secondary of the transformer is connected to the battery (12V, 7Ah), while the other two terminals of the secondary are connected to the collectors of power transistors T7 and T8, respectively.

When you power the circuit using switch S1, transformer X1 produces 230V AC at its primary terminal. This voltage can be used to heat your soldering iron. Assemble the circuit on a general purpose PCB and house in a suitable cabinet. Connect the battery and transformer with suitable current-carrying wires. On the front panel of the box, fit power switch S1 and a 3-pin socket for connecting the soldering iron.

This 12VDC to 220VAC inverter circuit produces an AC output at line frequency and voltage. The 555 is configured as a low-frequency oscillator, tunable over the frequency range of 50 to 60 Hz by Frequency potentiometer R4.

The 555 feeds its output (amplified by Q1 and Q2) to the input of transformer T1, a reverse-connected filament transformer with the necessary step-up turns ratio. Capacitor C4 and coil L1 filter the input to T1, assuring that it is effectively a sine wave. Adjust the value of T1 to your voltage.

The circuit shown in the above has been Designed to drive an 8Wfluorescent lamp from a 12V source, using an Inexpensive inverter based on the ZTX652 transistor. The inverter will from operate from supplies in the range of 10V to 16.5V, attaining efficiencies up to 78% thus making it Suitable for use in on-charge systems Such as caravans / mobile homes / RVS as well as periodically charged systems Such as roadside lamps, camping lights or lights etc outhouse. Other features of the inverter are That it oscillates at an inaudible 20kHz and That it includes reverse polarity protection.

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