hi
i have some problem about making a electronic switch.
im currently doing a project base on a 68HC11 micro-controller board.
im trying to have the board to control another board by using the output pins of the board as a switch.
when the pin is high its 3.3v and low is 0.9v. and when the pin is high, i want it to be connect and low to disconnect.
i have a switch using a 2n222 npn transitor but it seem to activate even when the pin is low.
is there any other of making a electronic switch ??
i have draw the circuit of the switch i have do but dun seem to work ..
i have some problem about making a electronic switch.
im currently doing a project base on a 68HC11 micro-controller board.
im trying to have the board to control another board by using the output pins of the board as a switch.
when the pin is high its 3.3v and low is 0.9v. and when the pin is high, i want it to be connect and low to disconnect.
i have a switch using a 2n222 npn transitor but it seem to activate even when the pin is low.
is there any other of making a electronic switch ??
i have draw the circuit of the switch i have do but dun seem to work ..