Here is the circuit diagram of lantern dimmer / flasher designed by Tony Van Roon:
There are two circuit modes: dimming and flashing. The flasher mode is useful for warning other drivers of your troubles and it may be adjusted to have a very short flash duration for long-term use as when the car must be left on the shoulder over night.
Electronic Parts List:
R1 = 100K R2 = 100K R3 = 100K R4 = 100K R5 = 3K9 R6 = 3K9 R7 = 470 R8 = 100 R9 = 220, 1/2 watt | P1 = 5K C1,C3 = 10uF/16V C2 = 0.01uF, ceramic T1 = 2N4401 T2 = TIP32 U1 = LM358 L1 = Lantern Bulb S1 = On-Off Switch |
Lantern Dimmer Circuit Notes:
There is nothing particularly critical about the resistor and capacitor values and the experimenter may change them, if desired. For example, a 10K-pot may be substituted for the 5K by increasing the 3.9K resistors by 2 also (8.2K would be fine). The 100K’s in the flash circuit may be a different value if the capacitors are also scaled (inversely–if the resistors are doubled, the 0.1 and 10uF are halved).
Good luck…
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hi is there a substitute for tip32 other than nte197? i tried 2n3702. the C3 either explodes or turns red on multisim. has anyone made this to work?
The recommended lantern battery is 6V-12V. The lantern bulb/led is depended to the battery. You may try to use 6v led for 6V lantern battery
hello sir,
i have few questions regarding this circuit
1) this lantern dimmer circuit output voltage is...???
2)can we use 3watt power led with 6volt,4.5a battery, if no than what changes required..?
waiting for your reply sir...