I'm trying to build a discrete SPDT switch using transistors. I have a Latching Hall Sensor
with an open-collector output. When the Hall switches on and off, I want to create a POSITIVE voltage/
current signal (5v? 6v? 12?) that is routed to either of the two triggers of a H-bridge, but not simultaneously, obviously.
I did a search here first, and found the following schematic, (see below)
but it doesn't work with the parts I used. It sorta works, but the LEDs that I used
for loads didn't go off completely. I plugged a PNP BJT transistor into the schema as well,
but had poor results. We can think of the 2n3904 as being the open-collector of my hall sensor...
Rload1 and aRload2 are routed to my H-bridge (INPA/INPB, bottom) for forward/reverse.
Maybe I'm going about this all wrong, I need some help.
https://forum.allaboutcircuits.com/threads/how-to-emulate-a-spdt-relay.119279/post-946781
I'm using an H-Bridge like this:
with an open-collector output. When the Hall switches on and off, I want to create a POSITIVE voltage/
current signal (5v? 6v? 12?) that is routed to either of the two triggers of a H-bridge, but not simultaneously, obviously.
I did a search here first, and found the following schematic, (see below)
but it doesn't work with the parts I used. It sorta works, but the LEDs that I used
for loads didn't go off completely. I plugged a PNP BJT transistor into the schema as well,
but had poor results. We can think of the 2n3904 as being the open-collector of my hall sensor...
Rload1 and aRload2 are routed to my H-bridge (INPA/INPB, bottom) for forward/reverse.
Maybe I'm going about this all wrong, I need some help.
https://forum.allaboutcircuits.com/threads/how-to-emulate-a-spdt-relay.119279/post-946781
I'm using an H-Bridge like this:
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