I am a communication network sepecialist. However, I need a power supply in one of my projects. This power supply should trigger on a certain voltage level and then shuts down on a certain voltage level.
My solar cell can produce 5 Volts maximum. Its very small in size and this solar cell actually charges a 0.022F capacitor (5.5V) instead of a battery. The capacitor is then expected to supply power to a sensor circuit. The sensor circuit operates on 4 to 6 volts with a current requirement of 10mA.
So, I am in need of a circuit which allows the capacitor to get charge until it reaches a certain level (say 5 volts) and then it starts supplying power to the circuit. After that it should shut down the power supply when it discharges to 3 volts.
I am using capacitor because in my case I need only 3 or 4 readings from a sensor. This does not require much power. So, before taking the reading, I will charge the capacitor by directing light on solar cell. Then the capacitor charges to a certain level before supplying power.
I would be more than thankful if you could help me in finding the exact circuit or at least tell me some sort of a kit which can do this. Some keywords for searching on google would also be appreciated. My expertise is in communication networks. So, I have very basic knowledge of electronics. Please do not mind if I ask any stupid question.
Many thanks in advance.
My solar cell can produce 5 Volts maximum. Its very small in size and this solar cell actually charges a 0.022F capacitor (5.5V) instead of a battery. The capacitor is then expected to supply power to a sensor circuit. The sensor circuit operates on 4 to 6 volts with a current requirement of 10mA.
So, I am in need of a circuit which allows the capacitor to get charge until it reaches a certain level (say 5 volts) and then it starts supplying power to the circuit. After that it should shut down the power supply when it discharges to 3 volts.
I am using capacitor because in my case I need only 3 or 4 readings from a sensor. This does not require much power. So, before taking the reading, I will charge the capacitor by directing light on solar cell. Then the capacitor charges to a certain level before supplying power.
I would be more than thankful if you could help me in finding the exact circuit or at least tell me some sort of a kit which can do this. Some keywords for searching on google would also be appreciated. My expertise is in communication networks. So, I have very basic knowledge of electronics. Please do not mind if I ask any stupid question.
Many thanks in advance.