Erik van Gerven
Member
Hi folks,
I plan to build a picaxe controlled power supply 0-30V and current limiting 0-3 amps
The picaxe will have to deliver 2 separate dc voltages (1 for voltage, one for current) Is this possible? I get a bit confused but learned a resolution of 1024 is possible.
Voltage regulation (about 30 V max) will have a resolution of about 0.03 Volts
The other pwm doesn't need such fine resolution but 1024 steps will result in about 3 milli Amps per step
Altenatively I could use i2c D/A converters of course...
Schematics are not available yet but it will be loosely inspired by the http://www.eevblog.com/usupply
Bottom line: I need 2 seperate PWMS, 0-1024 that may share their clock but further not influence eachother.
Further, there will be about 8 buttons and 1 LCD needed for the project
Tnx,
Erik
I plan to build a picaxe controlled power supply 0-30V and current limiting 0-3 amps
The picaxe will have to deliver 2 separate dc voltages (1 for voltage, one for current) Is this possible? I get a bit confused but learned a resolution of 1024 is possible.
Voltage regulation (about 30 V max) will have a resolution of about 0.03 Volts
The other pwm doesn't need such fine resolution but 1024 steps will result in about 3 milli Amps per step
Altenatively I could use i2c D/A converters of course...
Schematics are not available yet but it will be loosely inspired by the http://www.eevblog.com/usupply
Bottom line: I need 2 seperate PWMS, 0-1024 that may share their clock but further not influence eachother.
Further, there will be about 8 buttons and 1 LCD needed for the project
Tnx,
Erik