I'm looking for a schematic of a linear phase controller (not a simple switch). On the WWW i've find this:
http://sound.westhost.com/project103.htm
The problems is the power supply, i need of a circuit that can be powered by single 12 volt ( battery ). Anyone can say me how can i mod this schematic for single supply usage ( or paste a link with a schematic)?
Tanks, Alberto
http://sound.westhost.com/project103.htm
The problems is the power supply, i need of a circuit that can be powered by single 12 volt ( battery ). Anyone can say me how can i mod this schematic for single supply usage ( or paste a link with a schematic)?
Tanks, Alberto
The way is right!
But i now that via some resistance are possible transorm the circuit to a single power supply. I need of second stage of this, but i don't know where i place the voltage partitor(s)...
But i now that via some resistance are possible transorm the circuit to a single power supply. I need of second stage of this, but i don't know where i place the voltage partitor(s)...
Mordor,
You might not get good performance if you operate the opamps at + and - 6 volts (from a 12 volt system with a phantom center tap). You might use a dc to dc converter which can take the +12 volts and produce - 12 volts at its output. The opamps will be perfectly happy operating from + and - 12 volts.
You might not get good performance if you operate the opamps at + and - 6 volts (from a 12 volt system with a phantom center tap). You might use a dc to dc converter which can take the +12 volts and produce - 12 volts at its output. The opamps will be perfectly happy operating from + and - 12 volts.
"My Alpine have 4 volt Preout, imho 4+4=8 volt ar minim."
Opamps can't output all the way to the voltage rail. Most opamps fall a few volts short. If you operate the opamps at + and - 6 volts, it will be outputing nearly to its limit. You'll likely get clipping on audio peaks.
Another possibility would be to attenuate the input signal so as to keep the opamp output below the clipping point.
I'd try to use + and - 6 volts. If you get distortion, either reduce the input level or increase the operating voltage.
Who knows ... It might work fine.
Opamps can't output all the way to the voltage rail. Most opamps fall a few volts short. If you operate the opamps at + and - 6 volts, it will be outputing nearly to its limit. You'll likely get clipping on audio peaks.
Another possibility would be to attenuate the input signal so as to keep the opamp output below the clipping point.
I'd try to use + and - 6 volts. If you get distortion, either reduce the input level or increase the operating voltage.
Who knows ... It might work fine.
Ok, but the majour problem remains 🙂
How can i do for supply with single 12 volt the phase controller?
How can i do for supply with single 12 volt the phase controller?
"How can i do for supply with single 12 volt the phase controller?"
Please visit http://sound.westhost.com/project43.htm and learn about creating a phantom center tap from a single voltage.
Rod's first schematic will work just fine for your use.
What you are going to do is provide a 6 volt tap from your single ended 12 volt power. This 6 volt point will be used as a common ground for your opamp circuit. The 12 volts will be used as + voltage to power pin 8 of your opamps and the 0 volt point (automobile chassis ground) will be used as the - voltage to power pin 4 of your opamps.
Now. When using this method, you must use an input coupling capacitor (non-polar 1uf is fine) and an output coupling capacitor (non-polar 1uf is fine here, too) because the entire circuit is floating at a level that is 6 volts above your automobile chassis ground. If you use these coupling capacitors, be sure to connect your input and output shields to automobile chassis ground and not to the 6 volt point.
Please visit http://sound.westhost.com/project43.htm and learn about creating a phantom center tap from a single voltage.
Rod's first schematic will work just fine for your use.
What you are going to do is provide a 6 volt tap from your single ended 12 volt power. This 6 volt point will be used as a common ground for your opamp circuit. The 12 volts will be used as + voltage to power pin 8 of your opamps and the 0 volt point (automobile chassis ground) will be used as the - voltage to power pin 4 of your opamps.
Now. When using this method, you must use an input coupling capacitor (non-polar 1uf is fine) and an output coupling capacitor (non-polar 1uf is fine here, too) because the entire circuit is floating at a level that is 6 volts above your automobile chassis ground. If you use these coupling capacitors, be sure to connect your input and output shields to automobile chassis ground and not to the 6 volt point.
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