Class D Modulator

[tiotepe]

I want to build a class D modulator with IC XR-2206. that generate triangle wave signal as carrier signal with frequency about 300kHz . But i had a problem that XR2206 triangle signal output has a DC offset voltage about 6 VDc. Anyone can help me how to remove this DC offset voltage ?? (i have try use capasitor to blocking a DC voltage but the signal is filtered by capasitor with cutoff frequency)

thanks,

 

[AP2]

I want to build a class D modulator with IC XR-2206. that generate triangle wave signal as carrier signal with frequency about 300kHz . But i had a problem that XR2206 triangle signal output has a DC offset voltage about 6 VDc. Anyone can help me how to remove this DC offset voltage ?? (i have try use capasitor to blocking a DC voltage but the signal is filtered by capasitor with cutoff frequency)

thanks,

If I can help you, use a passive integration therefore start from a square wave oscillator. save money and a lot of noise. (need a square wave clean)
For cutoff, that you have uploaded the output of the capacitor?

 

[don2007ksa]

modulator

Hi Ap2 will this modulator work?

 

[AP2]

Hi Ap2 will this modulator work?

yes work .. I assume it is for PA amps. a little unnecessarily complicated ... (triangular section) and with a lot of hysteresis. but ... work 🙂