Minecraft Pulser Burns out

According to this article

1-clocks and 3-clocks are possible to make but they will "burn out" because of their speed, which makes them unstable. Redundancy can be used to maintain a 1-clock, even as the torches burn out; the result is the so-called "Rapid Pulsar"

Whenever I make a 1 clock, it pulses for a bit, then burns out and never comes back on. How do I implement Redundancy which will keep it pulsing?

A rapid pulsar works by basically having four 1-clocks, when one burns out another takes over. You can't have a 1-clock by itself without it burning out. The largest stable clock is a 5-clock.

http://www.minecraftwiki.net/wiki/Redstone_circuits#Pulse_Generators