Rescyou said:I have a dc voltage of 0-1vdc and need to boost it to 0-5vdc with a minimum part count. Any ideas?
Rescyou said:I'm using a Pic controller to generate 12 channels of software based PWM output. By varying the cycles I can achieve the 12 channels flicker free signal for light dimming outputs without the use of an RC/Opamp filter. Unfortunately with the reduction of the cycles the output is just over 1vdc at maximum duty for each channel. Most drivers that I'm familiar with are the TTL ones thus the need for the boost to 5vdc. Basically in the end I need about 0-12vdc for the light dimming which is no problem to achieve if I can get 0-5vdc from the pwm outputs.
I can reduce the pwm channels and increase cycles to gain more voltage, but I was hoping that could find a simple hardware solution. I can get the 5v if I run the signal through a source driver then through a sink driver and then through another source driver and finally a mosfet, but that is an insane amount of parts and grief. I can also get the 5vdc fairly easy using other methods but unfortunately its 3-5vdc instead of 0-5vdc
I'm just being greedy with the PWM channels I guess and will most likely have to cut them down
Rescyou said:With software based PWM each channel does not simultaneously output. Channel 1 turns on for 1ms then shuts off then channel 2 turns on for 1ms and then turns off and then channel 3 turns...etc.etc.etc. the full cycle is basically about 12ms long with each channel getting 1ms of it, thus the 1v output on each line. I was amazed that it put out that much as it should be only putting out about .42v (1/12 or 5v) I was hoping to amplify this signal to get the full TTL range.