V1 just became 5v, with a 100k resistor at the anode.Īdditionally, as this was going to be fed into an arduino, the potential divider was removed, and the output is just fed straight into Analogue input A3. The usual changes were made when I converted this to my project. This was actually found elsewhere on the internet, mainly here: This is identical to the higher voltage schematic, although it must be noted that the input voltage is only 5v, with the cathode resistor replaced by a 100k resistor.īelow my poorly drawn schematic versus the original can be seen.ĮF183 (Pentode) NAND Gate (acting as a NOR Gate) The schematics are mainly derived from this site:
To select a logic function, just read whichever pin is suitable.Ī2 is the input coming from the OR gate, A3 is the input from the resulting NOR gate (inputs on a NAND shorted = NOT, which is inverting an OR gate = NOR), A4 is the AND gate input with A5 being the output from the NAND gate. Analog pins A0 and A1 are the inputs to the logic gates. So fundamentally, this is how the circuit works.
#VACUUM TRANSISTOR GATE CONTROL CURRENT SOFTWARE#
Are they easy to understand? Are they hand drawn? Produced by proper CAD software or MS paint? Basic Logic Diagram I have often found that a good indicator on how well a project is documented is by the schematics.
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