Hi, Thanks for the reply.In the original schematic, the line from the output to the switch is not a connection, it indicates that the output state is controlling the position of the switch.
You need to change your schematic to reflect that.
Hi Eric,hi PKR,
As you have not shown the type of 'switch' you planned to use, look at this alternative option.
EView attachment 242419
I modified the supply and changed the transistors also. Still unable to simulate.hi PKR,
Your post #14, simulation voltages are not the same as my posted sim.
You are using a +/-15V supply on the OPA, my circuit uses a single +5V supply
How do you expect the Current Mirrors to work correctly as they are only powered by +5V., when subject to a +/-15V control voltage.?
Also what are the specifications of the 4 transistors.?
E
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