Here I present something to make all of the class D amplifier people turn green.
Those engineer types will see what's going on here. If you don't get how this thing works, ask and I'll come back with a reply. It's pretty simple though.
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Those engineer types will see what's going on here. If you don't get how this thing works, ask and I'll come back with a reply. It's pretty simple though.
An externally hosted image should be here but it was not working when we last tested it.
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The diode rectifies the output of the switching driver. If it was not there, the device would be trying to switch 10V at 60KHz into the cap and load.... Not good. (This is a switching amplifier, not linear.)
So if I understand correctly you've built a VCO and output diode works as a FM-discriminator, is it right?
No.
This works on duty cycle.
The average amount of power in the inductor is controlled by pulse width, and to some extent, frequency.
This works on duty cycle.
The average amount of power in the inductor is controlled by pulse width, and to some extent, frequency.
Well, it's probably about twice as efficient as a typical class A of the same topology.
What you see here is a class D stage acting as the upper transistor of the class A stage.
The resistor acts as the class A stage's load in order to pull down and do the other half of the wave.
What you see here is a class D stage acting as the upper transistor of the class A stage.
The resistor acts as the class A stage's load in order to pull down and do the other half of the wave.
I have 3 questions......
1) Can I mod this with better input caps?
2) What kind of speaker cable should I use?
3) Can you recommend me a power supply?
1) Can I mod this with better input caps?
2) What kind of speaker cable should I use?
3) Can you recommend me a power supply?
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