relay binary counter

[IAINMAN96]

great!

[260830107]

awesome binary counter :)

[hrford]

recommend for overclocking

[HybridSpaceMonkey]

Brilliant! YouTube needs more people like you! I used to tinker with relays and other components, and I find your video both very interesting and educational. Thanks for sharing your projects :)

[larrykeegan]

what the professor was saying was that you can buy an integrated circuit for less than a dollar that is a 4 bit counter. My use of relays is a visit to the past, and I love the clicking and the lights. The circuit, which is not my design, is unique and interesting, and I believe, can still be found by searching for relay binary counter.

Larry Keegan

[brilbeer123]

Years ago, after watching a documentary on Konrad Zuse, I built a simple flip-flop (single bit memory) using two relays and indicator lamps. Didn't fancy making an 8-bit memory back then...

The clicking of the relays is magnificent. After setting such a thing up and connecting to the function generator, I could watch it for hours.

Could you make the schematic (or a link) for your binary counter available? I'd be interested in having a peek at it (and perhaps build one)

Peter, NL.

[skierplaterandy]

i love relays. i need to get some low voltage coil relays for a project im working on though.

[larrykeegan]

solid state switching has replaced relays, but

I love the clicking sound in many of the old relays. switching time may be 25 msec whereas logic gates close in 15 nanoseconds. But even there I like the slower sequence of logic events, especially when combined with flashing lights like in the old frankensein movies.

Larry Keegan

[skierplaterandy]

i know i can get some but i cant seem to find lower voltage ones. there all car voltages

[larrykeegan]

you can get relays down to 5 volts - and lower.

if you have access to the internet, you will find a number of suppliers, and all kinds of offers. If not go to radio shack, but less selection and higher price. they are out there all sizes and shapes (relays) - have fun !!!

[skierplaterandy]

yea i know. i wish radioshack didnt get taken over by the other company in my area. everything is the source wich has no compontents. radioshack is better.

i dont like to shop online much but im going to have to.

[azayles]

If the coils are wired in series then (and you mention this also) both relays are either on or off at the same time. Could you use ONE relay for a flipflop stage, just use a relay with more contacts?

[rsduhamel]

I think if you upload this video again, assuming that the quality of the original is better than this one, YouTube will make a high quality version available.

[rolandlovelock]

I really love this circuit because it demonstrates how far we have come in terms of developing more power efficient, faster and smaller components while the basic principles of binary logic haven't changed for over 60 years!

How about a binary clock using a few more of these and incandescent pilot lights?

[larrykeegan]

nice comments. But real thing about this circuit which is not mine, is the unusual arrangement. The 2 relays per binary stage are connected in SERIES and both relays are ON for one state of the flip-flop and both are OFF for the other state. By searching for relay counter you can find the actual circuits.

Larry Keegan

[kysyrian]

Really cool

Would it be easy to extend this to say an 8 or 16-bit counter?

[larrykeegan]

thanks - it could be because each stage consists of 2 relays which work independently and the circuit which someone devised back in the 1940s

is very dependable

however if somebody wanted this for practical purposes, probably best to go to transistors or integrated circuits. the output of these type circuits could drive displays or output relays

Larry Keegan

[yrotstsohgallet]

This is great. I'd like to build one.

[jonkeegan]

This is definitely the best relay binary counter video out there...to all you other fools, turn off your relays...go home...Keegan has done it again!