Electronic circuit for protecting a load against over-voltage

An electronic circuit for protecting a load against over-voltage, comprising:

• an input port for receiving a voltage from a power source;
• an output port for feeding the voltage to the load;
• a switching unit, connected to the input port and the output port, wherein the switching unit is arranged to switch on and off the voltage from the input port;
• a capacitive component, connected to the output port, wherein the capacitive component is arranged to receive the voltage when the switching unit is switched on and to feed voltage to the output port when the switching unit is switched off;
• and
• a comparing unit connected to the switching unit and the output port and arranged to obtain a value of the voltage at the output port;
• wherein the comparing unit is configured to:
• control the switching unit to be switched off when the value exceeds a first threshold indicating a highest voltage to be fed to the output port;
• and
• control the switching unit to be switched on when the value is below a second threshold indicating a least voltage to be fed to the output port.