Apr 10, 2006 #1 G GoldServe Junior Member level 3 Joined Jun 29, 2005 Messages 31 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,529 Hi, I am controlling some voltage regulator and I need the output of the uC to be a pwm signal at 2khz + and have a voltage output swing of 0 to 625mV. How do I create that? I'm guessing I need a cap or something like that?
Hi, I am controlling some voltage regulator and I need the output of the uC to be a pwm signal at 2khz + and have a voltage output swing of 0 to 625mV. How do I create that? I'm guessing I need a cap or something like that?
Apr 10, 2006 #2 M Miguel Gaspar Advanced Member level 1 Joined Mar 6, 2006 Messages 477 Helped 70 Reputation 140 Reaction score 34 Trophy points 1,308 Location Culiacán, Sinaloa, Mexico Activity points 4,971 You can use a voltage comparator like lm311, supply voltage of 5 Volts, pull up resistor of 10k. 0.625 V = (R/(R+10k))10v R = 1429 Load resistor
You can use a voltage comparator like lm311, supply voltage of 5 Volts, pull up resistor of 10k. 0.625 V = (R/(R+10k))10v R = 1429 Load resistor
Apr 11, 2006 #3 E electronrancher Advanced Member level 1 Joined Mar 24, 2002 Messages 447 Helped 46 Reputation 92 Reaction score 11 Trophy points 1,298 Activity points 6,935 why 625 mv only? is it a logic signal or an analog signal? if it's logic, just divide it down with a resistor divider.
why 625 mv only? is it a logic signal or an analog signal? if it's logic, just divide it down with a resistor divider.