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9 volt battery? | Electronics Forum (Circuits, Projects
May 29, 2009I want to make it portable ( handheld ). If I can use 1, 9 volt battery and give it continuous 31 volts I will be able to make it portable as well as effective longer, with the continuous voltage. The schematic up above given to me by k7elp60 would work well if I
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ElectroSchematics: over 1098 top electronics projects and electronic circuits with photos, datasheets and easy to read schematics plus how it works and how to build it.
How to Make buzzer circuit projects | ElecCircuit
Oct 01, 2019An electronic buzzer circuit is simple. But useful well worth and the price is lower than 1$. By using just a 9-volt battery only. So without worrying about electrical leakage or an electric shock from 220V to a buzzer. Unless also has LED will glow. Show that the circuit the normal operation as well.
9 Volt Audio Power Amplifier - Electronic Circuit
Apr 23, 20129 Volt Audio Power Amplifier Publisher Electronic Circuit This is an audio amplifier to facilitate can be there used with a miniature 9 volt Battery Operated,Current draw on since insufficiently as 5 milliamps amplification up to 500 mW.
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