Pulsating DC to constant DC

Thread Starter

olvine

Joined Mar 10, 2014
99
Hey !!

How can I get constant DC if I have pulsating DC ?
e.g A sine wave of 5Vpp and offset of 2.5V then how can I get constant 5V which is maximum amplitude of sine wave...
 

crutschow

Joined Mar 14, 2008
24,351
Rectifify it with a diode and large capacitor filter. The maximum you can get with a large, low forward drop Schottky diode would be about 4.8V with a small load (a few mA or so).
 

Thread Starter

olvine

Joined Mar 10, 2014
99
basically I want to calculate the amplitude of sine wave using ADC of PIC16F887. But at higher frequencies, lets say 1MHz, it won't get the samples and skip peaks.
so what should be done to get these peaks ? How can I slow down the incoming frequency and get the same amplitude as the original frequency.
 
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