Car blinkers have thermal interrupters:
the more current they pull, the faster they blink.
Left blinker faster than the right?
Probably a burned out bulb.

Intermittent windshield wipers do use a relay.
A variable-period / constant on-time timer drives it.

Ah, not that I want to be picky but some flashers use relays also. Mostly
the ones marked "Electronic"

"JeffM" wrote in message
om...
Car blinkers have thermal interrupters:
the more current they pull, the faster they blink.
Left blinker faster than the right?
Probably a burned out bulb.

Intermittent windshield wipers do use a relay.
A variable-period / constant on-time timer drives it.

On 7 Nov 2003 16:22:08 -0800, (JeffM) wrote:

Car blinkers have thermal interrupters:
the more current they pull, the faster they blink.
Left blinker faster than the right?
Probably a burned out bulb.

Intermittent windshield wipers do use a relay.
A variable-period / constant on-time timer drives it.


Most intermittent wiper circuits do the equivalent of turning on the
slow speed for about 1/2-second - just enough to move the wipers out
of there 'parked' position. From there the normal park circuit
completes the sweep.

-Chris