Hi,
I am somewhat inexperienced when it comes to electronics but I am wanting to build a fuel injection tester using a 555 timer chip. See link here..
http://hackaweek.com/hacks/?p=1156
Fuel injectors draw approx 1 amp and operate on 12vdc. The link is fairly detailed in terms of parts needed but I am wanting to know what size (wattage) resistors I need for the circuit and how do I work it out?
thanks
I am somewhat inexperienced when it comes to electronics but I am wanting to build a fuel injection tester using a 555 timer chip. See link here..
http://hackaweek.com/hacks/?p=1156
Fuel injectors draw approx 1 amp and operate on 12vdc. The link is fairly detailed in terms of parts needed but I am wanting to know what size (wattage) resistors I need for the circuit and how do I work it out?
thanks