Thanks for the posts and recommendations. I will check out Mims as I can see your point of view when it comes to understanding electronics. I enjoyed your honest opinions, so thanks for replying.
I only persisted with trying to understand because the book ' make electronics ' didn't explain that this would happen. I am trying to learn and i hope the book is a lot clearer in the future .If not , i may have to ask a question, i hope that is ok .I will try not to dig up any
horses that...
Thank you. I think I understand. When the relay switches on and the power is cut to the coil, the capacitor powers the coil for about a second keeping the switch on but it also powers D1, so it looks like D1 stays lit. Is that it ?. I hope i have understood your very good explanation. I think...
Hello there,
mkel_02_065.pdf and mkel_02_066.pdf represents the circuit .I checked the errata, couldn't find any explanation of the problem of one led staying lit while the other one flashes. Any ideas KJ6EAD ?.
HI hevans1944,
I have seen the flogging of this horse, which included problems an autistic man was having with this circuit .The thread
was very long and did not answer why the first led stays lit while the second one flashes. I checked your google link. Thank you.
Again...
Hello Colin,
When you you press the button, D1 is supposed to light up.Then it goes out when the coil charges in the relay which switches on D2 .The capacitor is supposed to give the coil an extra boost to keep the switch to D2 on for about a second after which the relay goes...
Hi, I was wondering if you could help me ?.
I built this circuit and D2 stays lit while D1 flashes while I press the button .Is this what is supposed to happen?.
I am new to this if you could explain that would be cool.
Thank you.