Hi guys
I am trying to build a circuit wth a resistive signal input to create a square wave signal.
I have a 14.2 volt DC input voltage and I THINK I need a 2.3Hz output square wave signal with ~10volts DC.
The resistive signal range is 5.9k Ohm to 0.18k ohm.
The square wave signal needs to increase in frequency as the resistance decreases.
Attached is a circuit diagram that google came up with, as well as a drawing of my interpretaition thereof.
I have build a circuit accordingly, but I am no expert, and yes, it is not working.
Attached is also a component list:
• Voltage Regulator: LM7810 (Outputs a steady 10V from your 14.2V input)
• Timer IC: NE555 (Standard or CMOS version)
• Resistors: One fixed resistor (\(R_{divider}\)) for the sensor, plus R₁ and R₂ for the timer
• Capacitors: One timing capacitor (C₁), plus decoupling capacitors (0.33μ F and 0.1μ F)
I am getting 10 volts after the voltage regulating circuit, but no oscillation.
So maybe my very crude circuit board is a problem, or AI has made a mistake.
Attached is also some pictures of my board.
If anyone can assits I would appreciate it, I am willing to pay for a working solution.