Skema Rangkaian Driver Power Amplifier

The transistors are 2SC3858 (NPN) and 2SA1494 (PNP), and feature high bandwidth, excellent safe operating area, high linearity and high gain. Driver transistors are 2SC5200 (NPN) and 2SA1943 (PNP). All devices are rated at 230V, with the power transistors having a 150W dissipation and the drivers are 50W. This circuit describes an amplifier, power supply and tests procedures that are all inherently dangerous. Nothing described in this article should even be considered unless you are fully experienced, know exactly what you are doing, and are willing to take full 100% responsibility for what you do. There are aspects of the design that may require analysis, fault-finding and/or modification.

Aug 29, 2016 - Learn how to build your own Class D power amplifier—one of the most. The fact that we are using an NMOS transistor for the high-side driver. Predstaviteljnie zoni atlas ogulova and crew.

It is perfectly ok to have “non 5Vs” coming out of a 5V regulator. All your voltages should be referenced to a common point.

Having it as you show it, even if you are copping others, IS confusing. The regulator is just a component, not the final design. By the argument you put forward, any variable power supply that uses, for example, a LM317 regulator would have a 1.25V output all the time as it is a 1.25V voltage regulator. The LM317 is just a part of a circuit that happens to be a 1.25V regulator, but produces a variable output. The same way the regulators in this circuit are being used to produce “non 5V” power rails.

They are just used to get a power rail that is offset by 5V from another rail. But all rails are measured W.R.T. I wouldn’t go lower than 20-24V for the power supply,but at least 30V is recommended. For low power amplifier, I think a different design would be better. If you are using a transformer (I recommend toroidal because of their size), and not a SMPS, you will need a bridge rectifier and some beefy filtering caps (I personally used 2x10 000uF per branch - positive/negative). About the potentiometer, although you could add one before the ” Input -P1” of value 100K, I suggest building a pre-amp circuit that also has tone control.

It is +12V referenced to -30V. Imagine that we use a multimeter and we put the black probe (ground) to the -30V rail. If we measure the real ground (which is 0V), on the multimeter digit we would read +30V. If me measure “+12V”, on the multimeter it reads +12V. BUT, if we put the black probe on the 0V ground, on the multimeter we would have -18V. We measure the electric potential difference, V2-V1.

When we measure “+12V” rail, we consider “-30V” supply to be V1. I used this notation because we connect the COM and VSS port of the IR2110 to the “-30V” rail. If you want to build an amplifier with such a low output this schematic will not do it and it is a bit overkill I think.

I would suggest to do a search for “Class D IC” and you will find some integrated circuits from ST and TI that are great. I think the datasheet for some also provide schematic and PCB. Here are some links:.