Hi all,
I only need a power on delay circuit, roughly one second or two,to energize a SSR.
The original board had a 2PST relay, and cut Live and Neutral , so i use also 2 SSR, in this schematic.
If someone could tell me why this solution was choosen, thanks also !!!
I found this circuit on the web, and had questions about .
LM555
My choices:
-Current :10 mA for the LS240D12 , sufficient to work and get a safety margin?
- Delay: R1 =10 kOhm C1 = 100 µF T= R.C ≈ 1s
- R2 : 10 kOhm 1/2 W
Should it work ?
In fact I need to get this delay, in order to power V bus of my bldc card,after Vge voltage of igbt module, hence roughly 1 or 2 seconds.
In a previous post, i was told that LM555 gurus could reply me.
Thanks a lot.
jm
I only need a power on delay circuit, roughly one second or two,to energize a SSR.
The original board had a 2PST relay, and cut Live and Neutral , so i use also 2 SSR, in this schematic.
If someone could tell me why this solution was choosen, thanks also !!!
I found this circuit on the web, and had questions about .
LM555
My choices:
-Current :10 mA for the LS240D12 , sufficient to work and get a safety margin?
- Delay: R1 =10 kOhm C1 = 100 µF T= R.C ≈ 1s
- R2 : 10 kOhm 1/2 W
Should it work ?
In fact I need to get this delay, in order to power V bus of my bldc card,after Vge voltage of igbt module, hence roughly 1 or 2 seconds.
In a previous post, i was told that LM555 gurus could reply me.
Thanks a lot.
jm
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