I need some help from the experts out there, I've been working on trying to design a circuit for awhile now and with my limited knowledge of circuit design, I've been unsuccessful thus-far in designing it. Here's what I'm trying to accomplish.
I need to build a circuit that takes a variable 0-10V DC signal (lets call this the control signal), and based on what the voltage is, I need it to regulate the output of a 12V DC power supply. Let me give you an example...
When the control signal is running at 10V DC, I want the power source to supply 12V DC. If the control signal is running at 5V DC (half power), I want the power source to supply 6V DC. If the control signal is running at 1V DC, the power supply would supply 0.83V DC, etc...
Control Signal: 0-10V DC @ 20mA
Power Supply: 12V DC @ 2A
The reason for this circuit is I want to be able to take a programmable controller signal and control the voltage but still supply up-to 2A.
I've been researching a solution for this for over 3 months and haven't quite found what I'm looking for yet. I've looked at resistors, pots, Regulators, switching regulators, op amps, and transistors, but still can't quite get the right design. Please Help!
Thanks.
I need to build a circuit that takes a variable 0-10V DC signal (lets call this the control signal), and based on what the voltage is, I need it to regulate the output of a 12V DC power supply. Let me give you an example...
When the control signal is running at 10V DC, I want the power source to supply 12V DC. If the control signal is running at 5V DC (half power), I want the power source to supply 6V DC. If the control signal is running at 1V DC, the power supply would supply 0.83V DC, etc...
Control Signal: 0-10V DC @ 20mA
Power Supply: 12V DC @ 2A
The reason for this circuit is I want to be able to take a programmable controller signal and control the voltage but still supply up-to 2A.
I've been researching a solution for this for over 3 months and haven't quite found what I'm looking for yet. I've looked at resistors, pots, Regulators, switching regulators, op amps, and transistors, but still can't quite get the right design. Please Help!
Thanks.
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