Flasher

Naming: Rr = Resistance of relay Rl = Resistance of load R = Series Resistance NO = Normally Open NC = Normally Connected Vcc = Supply Voltage Ion = Relay on current Ioff= Relay off current Ton = On time Toff= Off time T = Ton+Toff Calculations: Von = Ion*Rr Voff = Ioff*Rr k = Ton/T R = (k/(1-k))*Rl*ln((Vch-Voff)/(Vch-Von))/ln(Von/Voff) C = Ton/(R*ln(Von/Voff)) Vch = Rr*Vcc/(Rl+Rr) Toff = Rl*C*ln((Vch-Voff)/(Vch-Von))