Dual supply for audio amplifiers

Posted on Oct 17, 2012

Most amps acoustic frequencies that make our readers, instead of a transformer power, sometimes required two or sometimes three. This tactic is more common in amplifiers 'High-End', where the altar of high fidelity are all eager to sacrifice their economies. In these cases the primary, all connected to the network of 220V, paralleled each other yet, through a single security, the nearest outlet. The problem that arises in such a connection is related with as such security. If the amplifier has two transformers, then the defendant one of them leads by one channel (or more generally a set of circuits), and if available, and a third, he'll have as sole purpose supplying circuit protection and control of others.

Click here to download the full size of the above Circuit.

The only security that should be calculated to withstand the sum of the currents, will burn when it comes current exceeds said limit example where short circuit in one of the circuits that feed the three transformers. But what above all is what caused the 'burnt' it? To find it we should do quite a few measurements or if you have a good nose to smell the components of our amplifier. The small plaque with the few materials that appear in the photo, allowing the voltage network must be two different transformers (or general cargo) through two separate insurance. Because this simple circuit does not provide for the presence of land, you should place only within grounded devices rather than as an external circuit.

Leave Comment

characters left:

New Circuits

Zero consumption Anti-theft High power Code Switch for E-Bike Batteries

This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
Ultrasonic distance finder circuit

The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Simple Metal detector circuit with CD4030

Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Fully automatic watering circuit for flower pots

Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
Simple deep searching metal detector circuit

The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
Sub-Harmonic Bass Converter for Electric Guitars

The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
Echo Depth Sounding Sonar for Boats

In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
100W HiFi Audio Amplifier Circuit

This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
Plant-Pot Water Level Indicator Circuit

A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....

Create NOW your QR MENU for your Restaurant / Hotel / Bar / Caffe,

Comprehensive ordering/paying features. fully personalized to suit your Business.

Update Anytime! Easy and Simple!

Popular Circuits

switching power supply 2

This circuit will double almost any DC input voltage as well as handling plenty of current. 12 to...

12v To 220v Inverter 180w By 2n3055

This circuit is converter to use to charge DC12V from the lead-acid batteries to AC 250V for use...

TDA1514 40 Watt Audio Amplifier Circuit

This is a compact, easy to build amplifier that uses one IC only but delivers 40 watts of audio...

Constant Current LED Tester

Most of my circuits still use 5 V regulated power for the chips, because 8-bit microcontrollers...

Simple flower circuit

Circuit works: Rp1 ~ Rp13 scale resistance to the keyboard, but also the oscillator timing...