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Emergency Light (circuit)
Simple easy, economical and inexpensive scheme using 3 resistors, a diode, a capacitor, 2 PNP transistors, a source voltage of between 6 and 9 volts (if 9V are used they must increase the value of the resistors), a rechargeable battery 6/3 volts, a strip of LEDs or incandescent lamp 6/3 volts (If LEDS used with 6-volt battery, consider placing a current limiting resistor and connected in series with the LEDS.Si is incandescent lamp uses no resistance ...)
---------List of materials---------
- 2 PNP transistors TIP32A / OR 1 -BD557 Y 1 -BD558
- 3 Resistors (For 12V (6-0-6) 1 500Ω, 1k 1 1 de100Ω.). (For 18v (9-0-9) 1 1k, 1 2kΩ, 1 200Ω.
-1 O 1N4937 diode UF4007
25 -Capacitor 100uF / 50V
Rechargeable -Battery 3 / 6V LI-OH or Li-Poly.
-Power Voltage or transformer with center tap 6 / 9V
-Finally Light (LED or Incandescent)
-Resistance Of the LEDs (only with battery 6V)
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