Dc converters australia

DC to DC Powertech 1 Powertech Plus 1. Add to cart. Store Pickup. DC speed controllers are ideal for slowing down pumps and motors or dimming lights but commonly use resistance circuits and are very inefficient. Capable of 7A continuous output and 10A surge output. Designed for just about any modern electronic device, this adaptor will power MP3 players, games, CD players, appliances or anything else that require Handy DC voltage converter modules that can step-up or step-down voltages so you can power your devices where a different power source is present.

Multi Voltage Regulated Adaptor Module - 1. The circuit consists of an astable multivibrator IC1 , which switches the voltage supply for a transformer Tr1 on and off via a transistor T1.

The transformer secondary voltage is half-wave rectified and smoothed. The output voltage is then limited by Zener diode D5. In circuits where two signal paths must be electrically isolated, use is often made of an Optocoupler. Unfortunately, these devices require two power supplies: one for the sender, and the other for the receiver. In industrial and professional undertakings this requirement is met by a proprietary. DC-DC converter.

As these are by and large very expensive, they are not of very much interest to the average hobbyist. However, the do-it-yourself converter presented here is. The circuit diagram given above shows that the converter consists of an oscillator, IC, and a Driver, IC2, on the primary side, and of a rectifier, D1… D4, and buffer capacitor, C3, at the secondary.

In our prototype, operating from a 12V battery at the maximum 74 percent Efficiency, we measured a secondary output voltage of The secondary current should not exceed 10mA, because the secondary output voltage then drops below 10V and the efficiency deteriorates. That applies also to low-load conditions: when the secondary is open-circuit, the output voltage is 14V, but the efficiency is, of course, 0 percent! In other words: the circuit works optimally at a secondary load current of 9mA.

Oscillator IC1 operates at a frequency of around kHz. Its two output signals are each amplified in three parallel-connected buffers contained in IC2, and then applied to the primary of the isolating transformer. The voltage induced in the secondary winding is rectified and smoothed by C3.

The stated value of that capacitor is more than adequate for the relatively high secondary frequency of kHz. The isolating transformer is a DIY item: it is wound on a pot core of 22mm dia, and 13mm high with 0. The specific inductance, AL, of the core should be nH.

The core should not have an air gap. The insulating foil should be placed between the two windings to ensure an isolating voltage of 4KV. The LM steps down an input supply voltage to a fixed output voltage of 3. Five different modes of operation are used to optimize efficiency and minimize battery drain.

At light load, the device automatically enters into Economy ECO mode with the reduced quiescent current. In a low-battery voltage condition, a bypass mode reduces the voltage dropout to 60 mV typ. If a very low output voltage ripple is desired at light loads, the device can also be forced into PWM mode. Shutdown mode turns the device off and reduces battery consumption to 0. You want to convert your 12v DC to v DC. This means you want to step up magnitude of voltage. Just like the transformer in AC.

A chopper can convert a fixed DC to a variable DC either in step up or step down form. Now we want a step-up chopper also called boost converter. Here is a chopper circuit of boost convertor. In this chopper, a large inductor L in series with source voltage Vs is essential as shown in figure a. When the switch CH is on, the closed current path is shown as figure b and inductor stores energy during Ton period. When the switch CH is off, as the inductor current cannot die down instantaneously, this current is forced to flow through the diode and load for a time Toff, figure c.

As the current tends to decrease, the polarity of the EMF induced in L is reversed as shown in figure c. As a result, voltage across the load, given by. Exceeds the source voltage V s. In this manner, the circuit of figure a acts as a step-up chopper and the energy stored in L is released to the load. That is all about the circuit.

Considering the system to be lossless these two energies given will be equal. Toff — Vs. Toff Vo. Now, you want v from the source voltage 12v.

More precisely, the efficiency of the converter is calculated by dividing the output power Pout by its input power Pin. Since all power converters have inherent conversion losses, the output power is always less than the input power. You must have JavaScript enabled in your browser to utilize the functionality of this website. Specialists in the design, manufacture, testing and supply of power supplies and other electronic equipment.

View As Grid List. Provide regulated DC voltage when DC only is available. This will enable conversion to various voltage levels, in addition to electrical isolation to help set up independent power supply systems. Statronics are at the forefront of high-performance and design in power supplies, becoming one of the most renowned suppliers of DC to DC power converters in Australia, USA and New Zealand.

Our extensive range of products include isolated and non-isolated DC power supply, suitable for a variety of industries including the telecom, medical, rail, automotive and more. They are an ideal and cost-efficient option for converting DC power in the market. At Statronics, we are committed to not only meeting, but exceeding Australian safety standards.