what circuit do I need to use to power 60 LEDs with a 9v battery?
"how to get from 9v to 3v with little space."
"how to get from 9v to 3v with little space."
Less a data sheet for the LEDs I can't begin to even guess. You need the LED forward voltage and forward current to even begin to calculate the best way to go about it. Next and as several are posted, a data sheet for the battery you plan to use so the amp hour rating is known as well as discharge curves.what circuit do I need to use to power 60 LEDs with a 9v battery?
"how to get from 9v to 3v with little space."
But their current is 1mA only when the battery is brand new. When the battery voltage drops to 7V then their current is 0.3mA and when the battery voltage drops to 6V the current is almost zero and the LEDs might produce no light.I have some LEDs that are plenty bright @ 1mA, so assuming at least 2 in series with a resistor, that’s like 30mAs.
First of all make sure how are you going to connect them. Be very cautious about the current rating of the battery. Do not overload it. If there is an essential need to use 60 LEDs, you can use it after using a current booster such as darlington pair amplifier.what circuit do I need to use to power 60 LEDs with a 9v battery?
"how to get from 9v to 3v with little space."
Absolutely NOT! A Darlington does not boost the current coming out of the weak little battery. Instead it simply has a base current that is less than an ordinary single transistor.Be very cautious about the current rating of the battery. Do not overload it. If there is an essential need to use 60 LEDs, you can use it after using a current booster such as darlington pair amplifier.
No, because a capacitor divider works only for AC, not for continuous DC.Hello, if you are really concerned about the space, use a capacitor divider network.
No, a resistor divider is not used with an LED because only a single series resistor is used to limit the current. The LED itself limits the voltage. You can use a single resistor in series with an LED to work perfectly if the DC voltage is 1000V or more. It draws current only when the LED is turned on.Resistor divider can also be used but it unnecessarily dissipates power as resistor network continuously draws current from the source.