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ericgibbs said:hi vandor,
Dont post other members thread outdated drawings.
This thread is confusing enough already.
The voltage is irrelevant. It just needs to be > 5 Volt, so 63 V is OK.shermaine said:Hi,
I'm using Ra = 68k, Rb = 39k and C = 10 uF.The voltage me using is 63V. Does this voltage affect?
You need to make your posts more understandable. They are too vague.shermaine said:Hi eric,
i never test the test probe on 0 volt. Why not?
Basically, i was using an extra red led to connect to 7410> it does light up the both the 2 red leds. I don't understand this sentence.
I'm not sure if the capacitor volatge was affecting the 555 timer. What is the ideal volatge to be used? Basically, when i d/c the cap, with resitor on, the red light is on.
See my previous post re the cap voltage. What red light are you refering to? The one connected to U3/12 or the one connected to Eric's logic probe?
This sounds to me like the capacitor is shorted. You probably connected it the wrong way around and damaged it.shermaine said:Hi eric,
Basically, when i d/c the cap, with resitor on, the red light is on.
Which red LED? The one on U3/12 or the one used for Eric's probe circuit?shermaine said:Hi guys,
I have change a new capacitor and it still the same. It only managed to light up the red led.