Hi. I have an easy question ?
I imagine that the easiest way is to use PWM outputs to make a continuous analog signal between 0-5V, right?. How can I amplify that signal to a 0-10V range?. I imagine using transistors, but how?
Ok, i suppose i have to apply a non-inverted amplifier to the 0-5v pwm signal,
A simpler way to do it would be to take the output through a simple common emitter transistor stage with the collector load of the transistor connected to +10V. Then smooth that with an R & C or two. In that way you are already dealing with a 10V signal to start with and there is no need for a precise gain on the amplifier.
And how should i «smooth it into a true analog level first»?. Mike sais that i need a low pass filter the circuit to smooth out the PWM pulses to DC. Any Schematics? ...
Hi, I'm going to try both schematics that Delta uploaded, they are very clear! Thanks!I can't find the LT1466 (single supply rail to rail op-amp) where I live (Brussels).There are tones of references for single supply rail to rail op-amps on the net; I'm a little bit lost.At the shop I use to go, they have the TL081 and LM741, but I don't know if they are rail to rail (I don't see any info about it in the datasheet). Could anyone tell me other "typical" single supply rail to rail op-amps to replace the LT1466 in this schematics?For the transistor's schematic I was going to use a tip 120, is it ok?Sorry for my ignorance.Felix