10-08-2021, 03:18 PM
There is quite a bit of info out there on trafficators...
"The critical parameter for getting the pull of the coil right is the total ‘Amp-turns’ present in the winding. For 12v coils, there are 1000 turns with a resistance of 6 ohms, giving 2 amps – so 2000 Amp-turns. With 6v, the way to go is two coils of 500 turns in parallel. This gives half the resistance, so the same current at 6v as for 12v, namely 2 amps in both coils. The total amp-turns is therefore 2 coils x 2 amps x 500 turns = 2000 amp-turns again. The trafficator works as before, but taking 4 amps at 6v instead of 2 at 12v."
"The critical parameter for getting the pull of the coil right is the total ‘Amp-turns’ present in the winding. For 12v coils, there are 1000 turns with a resistance of 6 ohms, giving 2 amps – so 2000 Amp-turns. With 6v, the way to go is two coils of 500 turns in parallel. This gives half the resistance, so the same current at 6v as for 12v, namely 2 amps in both coils. The total amp-turns is therefore 2 coils x 2 amps x 500 turns = 2000 amp-turns again. The trafficator works as before, but taking 4 amps at 6v instead of 2 at 12v."