Over voltage protection with hysteresis

261

02:11:42

When charging 6s 2.7V super capacitors via a 20 Voc solar panel a reliable disconnect is needed at about 15.6V. Through hysteresis a reconnect of the solar panel will be done at about 14.6 V. The output LED will be replaced by a photovoltaic opto coupler as a driver for a high side n channel MOSFET switch.

I had difficulties to simulate the circuit having the feedback resistor directly connected with the opamp's output. It has led to a no-solution-found error, while I could simulate the same circuit successfully in my circuit-lab account. 

published 8 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.