Hello everyone,
I am waiting for this amp from China, Sure Electronics' webstore 2 x 300 Watt Class D Audio Amplifier Board Compact - T-AMP
and I am wondering about the benefits of running a Toroidal power supply, Avel Lindberg Y236903 800VA 40V+40V Toroidal Transformer vs. a Regulated power supply? Mean Well MW SE-600-48 48 VDC 12.5A 600W Regulated Power Supply
Thank you,
David.
I am waiting for this amp from China, Sure Electronics' webstore 2 x 300 Watt Class D Audio Amplifier Board Compact - T-AMP
and I am wondering about the benefits of running a Toroidal power supply, Avel Lindberg Y236903 800VA 40V+40V Toroidal Transformer vs. a Regulated power supply? Mean Well MW SE-600-48 48 VDC 12.5A 600W Regulated Power Supply
Thank you,
David.
An unregulated linear supply is easy to build, as you've probably found out by now.
Designing a linear regulated supply will be a challenge at the power levels you mention. The power dissipated in the regulator will be significant, so you need to design a heat sink to get rid of the waste heat.
The Mean Well SE-600 series is quite good. It does have one significant drawback: Its noisy fan. I suggest looking at the supplies by Hypex instead.
Tom
Designing a linear regulated supply will be a challenge at the power levels you mention. The power dissipated in the regulator will be significant, so you need to design a heat sink to get rid of the waste heat.
The Mean Well SE-600 series is quite good. It does have one significant drawback: Its noisy fan. I suggest looking at the supplies by Hypex instead.
Tom
Be aware, the toroid transformer you show is not suited for the amplifier. The transformer has two 40Vac windings intended for a symmetrical power supply. As far as I can see, the amplifier operates from a single voltage, up to around 48V.
40Vac with rectification and unloaded will leave a DC voltage of almost 60V. That will probably exceed the maximum for the amplifier.
You can make a linear regulated power supply even for 48V/10A. The power losses will require quite some cooling and I doubt you will notice the difference from a good unregulated supply. The main advantage of a regulated supply is you can choose a supply voltage close to the maximum for the amplifier (the voltage remains constant). With an unregulated power supply, the idle voltage has to be at the maximum for the amplifier. When loaded, the unregulated power supply will reduce in voltage such that you do not get the potential maximum output power.
40Vac with rectification and unloaded will leave a DC voltage of almost 60V. That will probably exceed the maximum for the amplifier.
You can make a linear regulated power supply even for 48V/10A. The power losses will require quite some cooling and I doubt you will notice the difference from a good unregulated supply. The main advantage of a regulated supply is you can choose a supply voltage close to the maximum for the amplifier (the voltage remains constant). With an unregulated power supply, the idle voltage has to be at the maximum for the amplifier. When loaded, the unregulated power supply will reduce in voltage such that you do not get the potential maximum output power.
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