What if increasing voltage from 12vdc to 36 on a turn signal relay.

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Exactly My dear Wattson.

kchriste said:
Try one of these on-line 555 calculators:
**broken link removed**
Some starting values for you:
R1 = 2.2K (Enter as 2200)
R2 = 100K (Enter as 100000)
C1 = 10uF (Enter as 10)
Click to expand...

You knew I couldn't do it myself. Just what I needed.

Thanks.

kv
 
Reducing duty cycle on 555 Astable.

This will not affect my circuit I'm building. However, now I have questions concerning limitations with Astable 555.

I was using different values on the 555 calculator and couldn't get it below 50% Duty Cycle.

Does this mean going below 50% can only be program to do so ?

kv
 
You have to add a diode to get below 50% (see datasheet) or you could connect the load from pin 3 to +V.
 
1n4148 or something else ?

Hero999 said:
You have to add a diode to get below 50% (see datasheet) or you could connect the load from pin 3 to +V.
Click to expand...

1n4148 was used a lot on some of the circuit boards we built that required pulse width modulation.


Thanks hero999



kv
 
Darlington Circuit used on relay's.

Hero999 said:
you could connect the load from pin 3 to +V.
Click to expand...

A Darlington Circuit with a relay. Posted in another thread seemed to me to be an example of what your talking about when your controlling the Duty Cycle.

Would that be accurate ? Correct me if I'm wrong.


kv
 
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