killivolt
Well-Known Member
Gee. I guess I missed that. Well, CONGRATULATIONS my man! Alright
I made some major noob mistakes. but little sleep and well old age and well .... you know.
Thanks again.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Gee. I guess I missed that. Well, CONGRATULATIONS my man! Alright
The can should be OK. If the emitter and collector are swapped, you will get low beta, which would cause temperature sensitivity.
Roff said:If the emitter and collector are swapped, you will get low beta,
SV said:You could try changing one of the amplifiers
This leads to an Idea.
Changing out parts. I might go as far as replacing the 4069's.
When I installed the bottom 4148 going to drain. I could have affected 2907 too!
I had a leaky MOSFET, because of it.
I'm changing out the 2907 first.
Edit: When I changed the MOSFET I just cut it out of circuit and soldered to the cut offs. Those may have an affect too! I'll have to push it through and solder it down.
Some current has to flow into the body, because the PNP base current has to flow through it. The current is miniscule, and it will probably be distributed throughout the body, making the current density very low.
I personally won't guarantee that it won't interfere with a pacemaker, but I doubt it.
The exciter output should not be a square wave, as I think you know.I received some new 4069's it completely squared the wave both top and bottom,
The exciter output should not be a square wave, as I think you know.
According to the simulation (I know, it's just a sim), the exciter output should be about 7V p-p.
Right, no it's not but the bugger has the same freaking voltage. I have replaced everything in the circuit.
The real reason why is before the 10k resistor I have an excellent square wave. Very good looks just like the the Diagram. Then After I have on the output side of the HEX on the rail is not a Shark tooth but it's a slopping pattern. Also, it expresses in the diagram that it should be a 9v Peak which when I measure it is 4.7v or so?
If I am to drive 50 touch sensors I will need to get that voltage up or so I think?
Edit: LIne 4