I plan to design some single power supply recently. Amplifier suitable for switching power supply.
The voltage range of power supply is DC12 - 60V. Use a single power supply. There is no negative voltage.
BTL structure is adopted. The output has no capacitance.
It is somewhat similar to the tda2005 structure. I think many people now only have some single voltage switching power supplies.
This makes them unable to DIY amplifier. Because dual voltage power supply cannot be purchased in many places.
Traditional transformers weigh a lot.
In fact, all analog amplifiers. CLASS AB。 Can use single power mode.
It can use the floating power supply of quad606.
Or use the BTL mode of tda2005.
https://www.diyaudio.com/community/...-scheme-class-ab-tda2005.388198/#post-7070292
It's easy. So that friends who only have a single power supply do not need to make class D amplifiers with poor performance. For example, tda3116. I think these things are a waste of time. DIY without sound quality has no meaning.
The voltage range of power supply is DC12 - 60V. Use a single power supply. There is no negative voltage.
BTL structure is adopted. The output has no capacitance.
It is somewhat similar to the tda2005 structure. I think many people now only have some single voltage switching power supplies.
This makes them unable to DIY amplifier. Because dual voltage power supply cannot be purchased in many places.
Traditional transformers weigh a lot.
In fact, all analog amplifiers. CLASS AB。 Can use single power mode.
It can use the floating power supply of quad606.
Or use the BTL mode of tda2005.
https://www.diyaudio.com/community/...-scheme-class-ab-tda2005.388198/#post-7070292
It's easy. So that friends who only have a single power supply do not need to make class D amplifiers with poor performance. For example, tda3116. I think these things are a waste of time. DIY without sound quality has no meaning.
First, I'm going to introduce it with quad405.
The quad405 uses a single power supply. For example, switching power supply DC 120-0
Quad606 original machine uses a set of ac82-0 AC voltage.
Dc115v DC voltage is obtained after rectification and filtering. Then use two capacitors. Change to DC + -57v
If you have a higher switching power supply voltage. For example, 80v-0.
Then only two filter capacitors are needed. Or 2 triodes.
You can make quad405 or similar class B circuit. Use single voltage switching power supply.
The quad405 uses a single power supply. For example, switching power supply DC 120-0
Quad606 original machine uses a set of ac82-0 AC voltage.
Dc115v DC voltage is obtained after rectification and filtering. Then use two capacitors. Change to DC + -57v
If you have a higher switching power supply voltage. For example, 80v-0.
Then only two filter capacitors are needed. Or 2 triodes.
You can make quad405 or similar class B circuit. Use single voltage switching power supply.
Attachments
You can try this circuit from w/w circa 1981. I would interested in buying a few kits if you make it as it is perfect for working off 48v meanwell psu
We can use many circuits. Any circuit
As long as it is designed as BTL mode, it can work with a single power supply.
Even all ready-made power amplifier boards. For example, the mx50se can only use a single power supply with a simple change. And maintain good performance.
The circuit of your drawing is relatively old. It has no current source. There is no mirror circuit.
I think we need to redesign the circuit.
Of course, if you are interested, I can also have a look at him.
After all, off the shelf can save a lot of time. And I think this circuit is very simple.
Fewer components are used than designing two separate circuits alone. I often use CFP output structure.