fala
Full Member level 5
bidirectional switch
Hello, I know this issue has been raised many times in this forum but neither of responses was practical or at least understandable for me.
I want to switch on-and-off an analog voltage that is a sine wave(and sometimes DC, I can't use Triac) between -15V to +15V with mosfet power transistors. Current of this line is about 1A. I want to control the bidirectional mosfet switch with TTL logic. The question is How?
I read in 4016 datasheet and elsewhere that two complementary N and P Mosfets are used in such switches BUT there is literally no information about how gate should be driven apart a few triangles and circles! Well I understand that P and N should be driven by a complementary signal but the trouble is how they should be driven so that Vgs be always in on state or off state? Source could be anywhere between -15V to +15V. my trouble is how gate should follow that voltage so that Vgs be always 10V(On state) or 0V(Off state).
Thank you very much!
Hello, I know this issue has been raised many times in this forum but neither of responses was practical or at least understandable for me.
I want to switch on-and-off an analog voltage that is a sine wave(and sometimes DC, I can't use Triac) between -15V to +15V with mosfet power transistors. Current of this line is about 1A. I want to control the bidirectional mosfet switch with TTL logic. The question is How?
I read in 4016 datasheet and elsewhere that two complementary N and P Mosfets are used in such switches BUT there is literally no information about how gate should be driven apart a few triangles and circles! Well I understand that P and N should be driven by a complementary signal but the trouble is how they should be driven so that Vgs be always in on state or off state? Source could be anywhere between -15V to +15V. my trouble is how gate should follow that voltage so that Vgs be always 10V(On state) or 0V(Off state).
Thank you very much!