class d cd4049+ir2110

[surachit]

THIS circuit use not gate cd4049 +lm311+ir2110 fre cass d 520khz

vdo class d ???not gate cd4049+lm311+ir2110 - YouTube

 

[stewin]

this looks simillar to irs900 only that it uses lm311 instead of tl071
by the way how does it sound, seeing that it uses high frequency 500khz , also what voltage did you use?

 

[NMOS]

THIS circuit use not gate cd4049 +lm311+ir2110 fre cass d 520khz

vdo class d ???not gate cd4049+lm311+ir2110 - YouTube

which Mosfet do you use ?

 

[sa3055]

Look at picture

Mosfet IRF640N

 

[stewin]

what voltage did you use? and what load did you speaker did you use ? 8ohms,4ohms or 2ohms ??

 

[surachit]

i test +-55v 4ohm 200w at 4 ohm this mosfet for test irf640

 

[stewin]

surachit
did you manage to remove the load while the speaker is playing loud? also have you ever tested high voltage on the amp?

 

[sweetperfume]

Followed exactly but did have any oscillation. Plus IR2110 Warms up a bit.

 

[sweetperfume]

Can you confirm with the schematic in first post if everything is as per schematic on your board?

 

[stewin]

i am working on a similar project but i will be using lm311 ,74hc00 , ir2110 all of them smd .
below is the schematic

 

[sweetperfume]

Hi stewin. Did you test your board?

 

[stewin]

i am still doing the board layout , i have not yet made and tested it.

 

[sweetperfume]

I will make a proper pcb and test.

 

[sweetperfume]

i am still doing the board layout , i have not yet made and tested it.

I tried your design. Did not turn on. Don't know what's the issue

 

[stewin]

kindly post pictures and schematic of your project

 

[sweetperfume]

Got it to work but fets heat up pretty high and very fast and frequency also not stable. Below 100khz.
Schematic as per your post.

 

[sweetperfume]

Tested at 30 35 and 40 volts.

 

[stewin]

Got it to work but fets heat up pretty high and very fast and frequency also not stable. Below 100khz.
Schematic as per your post.

wow nice layout . what is the value of the drivers?