problem with grounds

The link worked for me.

Your reader must have a problem with the link transposing over to the browser. I just checked it, it still works here.

I thought of joining the ground from the 40 supply to the the ground2 on

John,

the block diagram I started doing , is 1) pretty big and 2) more complicated then the circuit I am showing right now.

DO you still want a block diagram?

Which is why I don't trust simulators.

They are as accurate as my wife's driving.

Hi

I was able to reproduced the circuit using opto couplers :

Opto are not in this case cause it do not drive the mosfets to their saturation, and for odd reason , the simulation did not reflect reality. I you of a way to replace the opto to have 30v to the gates that would be amazing. I will send you an apple pie. :)

it makes a big difference.

for turning FETS on the important voltage is the difference between the source and the gate of that FET.

In the first circuit M6 has 12V M8 has -0V and M2 has 24V

In the second circuit M8 has only about 4V and so is not saturated yet.

in the third it has about 6V the data sheet suggests that 10V will saturate it.

if you put the 5 ohm resistor into the bottom of design5 and you should see it acutually working. adding the 270 ohm resistors on the optocoupler inputs may help too..

no. some sort of ground connection is needed to put a charge onto a node. it doesn't need to be a direct connection.

Bye. Jasen

D6 looks suspicious. where have all the voltage readings gone?

Bye. Jasen

I have added the voltage to the same link and John I made some simple box diagram. I will post them in a few hours

I posted another link up:

I posted a box circuit up:

full circuit at

it.gif

I would to show a circuit done from Rod Hower:

the circuit appears to be basically working.

use bigger diodes. (or don't use diodes if you don't need them)

voltage readings both sides of V11, and between D6 and V13 would be useful.

M5 is close to saturation with 0.31V drop, but M3 I can't tell

Bye. Jasen

looks like it's working, but those diodes are too small.

Bye. Jasen

I am using 5 amp diode, they did not have them in the simulation. therefore I used the 4148 just for the simulation

k.

hello,

I found a problem on my breadboard. I tested the conductivity along the negative and positive, showed me that there was a link. But when I put voltage on the line it does not appear anywhere, this is weird. anyhow I used another line and seems to be working. have fully tested the circuit yet.

lerameur wrote in news: snipped-for-privacy@k37g2000hsf.googlegroups.com:

Hmm, no go her. I viewed the Source and this is it:

Not Found The requested URL /captoro/motor/design6.gif was not found on this server. Apache/1.3.36 Server at www3.sympatico.ca Port 80

Well, no biggie, I was just curious to take a look.

- Kris