ViolationMad

modified 8 years ago

Discrete 555 Timer

254

02:42:48

Its almost finished now, I just need to adjust the RS latch properly.

published 8 years ago

hurz

8 years ago

RS flip flop is ........ output stage working against 100kOhm is ........ comparator performance is ........ and why start with astable mode? Why not a monostable testsetup? Start with the simple things to understand and make them perfect. Now its more or less ........

ViolationMad

8 years ago

Thx for the constructiv feedback bro..........

hurz

8 years ago

Take the constructive content, if you can see it.

ViolationMad

8 years ago

I tried to, if you can see it.

hurz

8 years ago

No, you did not. You started with a mess transistors you do not understand. Or do you think an RS flip flop does look like this? So you better start with an RS flip flop. Followed by comparators. Just an idea.

ViolationMad

8 years ago

No you dont really get it. If i had looked up the schematic of the flipflop it would have been a copy and you would complain anyway. Actually i just wanted to try if it works with one of the softlatch circuits i saw a lot around here recently. Read the description........ never said it was a flipflop (And im pretty sure you want to cry about the titel now but........you dont need to anymore). (Falls du es gesehen hast war mein Fehler, wenn nicht weißt du eh nicht um was es geht.)

hurz

8 years ago

Its just ridiculous if people try to build a computer but do not know how a RS Latch works. BTW, there is still some space left you can fill with wild conneted transistors. Looks just cool.

ViolationMad

8 years ago

I dont see where your argument is going.......It was never ment to be a computer or a RS latch. But out of the constructiv criticism i removed some transistors and made a real RS circuit. But for real tho. How am i supposed to learn electronics if everybody is like you and sooooo proud of there knowledge that they dont want to share it. Its actually pretty hard to learn all that stuff from wikipedia.

hurz

8 years ago

You see, you can come closer to something functioning if not starting with a mess. Divide and rule! Finally you will understand your own RS flip flop design and wont need a finished one from EC.

ViolationMad

8 years ago

Thx then, i guess. I will look for a real rs later.

ViolationMad

8 years ago

What do you mean with think about the comparators? You replaced them with two pnps which is new to me. I get the concept but shouldnt they drop 0.7V and so dont hit exactly 2/3 and 1/3 of Vcc?

ViolationMad

8 years ago

Oh they do...didnt really see it in the scope screen my fault. But the RS latch is pretty much two NOT gates? Or is it two NANDs?

ViolationMad

8 years ago

I mean i now how two use a transistor as a inverter and i google told me i could make a rs from two not gates but im a bit confused.

hurz

8 years ago

Was just to inspire you, to think about the basics.

ViolationMad

8 years ago

Yh thx really appreciate your effort.

hurz

8 years ago

You are welcome

carlos2201

8 years ago

PURE SHIT THIS CIRCUIT

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