Capacitors have a steady voltage change when they are being charged/discharged by a steady current. A 1000µF capacitor will change 1V per second @ 1mA. The voltage change looks like a ramp on an oscilloscope.
Video below shows how I put this circuit together on a breadboard.
Affiliate link ad. Looks like a really good kit to own if you need higher value capacitors.
- Brief discharging capacitor voltage ramp using LM334 current source
- Brief fixed resistor voltage divider circuit
- Brief trimmer potentiometer trimpot variable resistor voltage divider circuit fragment
- Brief 555 bistable mode flip flop alternating LEDs circuit
- Brief 555 timer monostable one shot mode circuit
- Brief 555 timer astable multivibrator mode circuit
- Brief 555 Schmitt trigger logic inverter
Links that support this site!
As an Amazon Associate I earn from qualifying purchases.
- Information on this site is not guaranteed to be accurate. Always consult the manufacturer info/datasheet of parts you use. Research the proper safety precautions for everything you do.