Hi,
I have a beginner question about some behaviour I'm seeing with different connections between power (a 9V battery) and a simple 555 timer circuit which blinks some LED's.
When I connect the battery directly to the circuit I observe correct behaviour and there are no issues (see "Expected.png"), the LED's blink on and off as I want them to with the correct timing.
However, certain things cause the LED's to not blink correctly, they flicker for a fraction of a second before lighting fully. (see "WTF.png") and I observed the following behaviour which all centered around how the battery was connected.
Using direct battery connection (5cm battery connector) -> Gives expected result.
Using 30cm test leads with 22AWG stranded core -> Gives WTF result.
Using 30cm test leads with 22AWG solid core -> Gives expected result.
Measuring current from battery to breadboard with Fluke multimeter and Fluke test lead (measures about 40mA) - Gives WTF result.
As I don't yet know the name for this phenomenon I'm finding it challenging to search for it, so any pointers would be greatly appreciated!
I have a beginner question about some behaviour I'm seeing with different connections between power (a 9V battery) and a simple 555 timer circuit which blinks some LED's.
When I connect the battery directly to the circuit I observe correct behaviour and there are no issues (see "Expected.png"), the LED's blink on and off as I want them to with the correct timing.
However, certain things cause the LED's to not blink correctly, they flicker for a fraction of a second before lighting fully. (see "WTF.png") and I observed the following behaviour which all centered around how the battery was connected.
Using direct battery connection (5cm battery connector) -> Gives expected result.
Using 30cm test leads with 22AWG stranded core -> Gives WTF result.
Using 30cm test leads with 22AWG solid core -> Gives expected result.
Measuring current from battery to breadboard with Fluke multimeter and Fluke test lead (measures about 40mA) - Gives WTF result.
As I don't yet know the name for this phenomenon I'm finding it challenging to search for it, so any pointers would be greatly appreciated!