This circuit of powerful flashing lamp is good use in vehicles. The LM395 IC based on circuit also known as super-transistor, which is terribly powerful integrated monolithic power transistor with options such as thermal protection, current limit etc. In fact, this circuit is almost indestructible. The IC will handle currents up to 1A 40V and switc
h in less than 500 nanoseconds. Resistor R1 and capacitor C1 determine the frequency of blinking. With the flash rate indicates the value is approximately 1 flash per second.