single pules in, multiple pulse output circuit

[John Fields]

On Mon, 3 Nov 2008 01:46:56 -0000, "gazz" <n@spam.ta> wrote:

FAO John Fields,

About to order the components to make up your token pulser,

can i just check i have the right parts list....

The part numbers are what my local electronics place list, tell me if i have
any wrong.

1 x CD74HCT40103E.... that's the 40103 down binary counter.
---

That's a 5V part, so it won't work if you're using a 12V supply.
What you need is to use a CD40103B or to modify the circuit so it'll run
on 5V.
---

1 x 4011B... the quad 2 input nand gate,
---

OK
---

18 x 1N4148 signal diodes, is 75V 150Ma enough?
---

OK
---

1 x 10Nf capacitor... ceramic disc type?
---

OK
---

1 x 100Nf capacitor.. again ceramic disc?
---

OK
---

9 x 10k Resistors.... 0.1% 0.4w?
---

10k ohms +/- 5%, 1/4 watt
---

1 x 100k Resistor... same spec as above,
---

100k ohms +/-5%, 1/4 watt
---

1 x 5100 resistor... that's thrown me a bit, 5.1k? this is for R11
---

5.1k ohms +/- 5%, 1/4 watt
---

1 x low current red led.
---

OK
---

1 x 2N3904 NPN transistor, in a TO-92 package, 60V
---

OK
---

Have i missed anything out? or got any components wrong?
just that 5100 resistor thats got me really,

---
Since your input and output pulses are +12V, the circuit was designed
with Vcc = +12V, so the only problem I see is with the 5V part.

JF

 

[John Fields]

On Mon, 3 Nov 2008 00:30:09 -0000, "gazz" <n@spam.ta> wrote:

i have the schematic from john fields,

uses a 40103, i'm trying to lay it out in eagle (the pcb designer software)
but their libraries dont have a 40103 listed, just a 40106, which is a
schmidt trigger, and a 40193, which is a binary up down counter,

would the 40193 be similar enough to use for laying out a pcb?

---
They're both 16 pin chips, so as long as you connect the pins by number,
as shown on the schematic, and not by function, everything should come
out OK.

BTW, on the 40103 Vcc needs to be connected to pin 16 and GND to pin 8,
while on the 4011, Vcc needs to be connected to pin 14 and GND to pin 7.

Also, there's an error on the drawing in that the 4011's reference
designation should be "U2"

JF

 

[gazz]

"John Fields" <jfields@austininstruments.com> wrote in message
news:bsptg49joj1r0bsd5cip90r874dgrik4d4@4ax.com...

On Mon, 3 Nov 2008 01:46:56 -0000, "gazz" <n@spam.ta> wrote:

FAO John Fields,

About to order the components to make up your token pulser,

can i just check i have the right parts list....

The part numbers are what my local electronics place list, tell me if i
have
any wrong.

1 x CD74HCT40103E.... that's the 40103 down binary counter.
---
That's a 5V part, so it won't work if you're using a 12V supply.
What you need is to use a CD40103B or to modify the circuit so it'll run
on 5V.

Gotya, i want to keep the circuit as 12 volts, so will search out the
correct part.

 

[gazz]

"John Fields" <jfields@austininstruments.com> wrote in message
news:bsptg49joj1r0bsd5cip90r874dgrik4d4@4ax.com...

1 x CD74HCT40103E.... that's the 40103 down binary counter.
---
That's a 5V part, so it won't work if you're using a 12V supply.
What you need is to use a CD40103B or to modify the circuit so it'll run
on 5V.

darn it, can get the CD40103B ar RS components, but gotta buy 10 of them at
29p each, BUT they are part of the extended range, and incur a Ł10 order
fee!!!! nuts to that.

farnell has the CD40103BE, is that the same? that one is 55p and can buy
singles, but they have a minimum order of Ł25,

 

[John Fields]

On Mon, 3 Nov 2008 15:02:01 -0000, "gazz" <n@spam.ta> wrote:

"John Fields" <jfields@austininstruments.com> wrote in message
news:bsptg49joj1r0bsd5cip90r874dgrik4d4@4ax.com...

1 x CD74HCT40103E.... that's the 40103 down binary counter.
---
That's a 5V part, so it won't work if you're using a 12V supply.
What you need is to use a CD40103B or to modify the circuit so it'll run
on 5V.

darn it, can get the CD40103B ar RS components, but gotta buy 10 of them at
29p each, BUT they are part of the extended range, and incur a Ł10 order
fee!!!! nuts to that.

farnell has the CD40103BE, is that the same?
---

Yes
---

that one is 55p and can buy singles, but they have a minimum order of Ł25,

---
Good news!

Digi-Key UK has them, in stock, no minimum order, no handling charge.

http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=UK&keywords=CD40103&x=21&y=11

JF

 

[John Fields]

On Mon, 03 Nov 2008 11:52:31 -0600, John Fields
<jfields@austininstruments.com> wrote:

On Mon, 3 Nov 2008 15:02:01 -0000, "gazz" <n@spam.ta> wrote:


"John Fields" <jfields@austininstruments.com> wrote in message
news:bsptg49joj1r0bsd5cip90r874dgrik4d4@4ax.com...

1 x CD74HCT40103E.... that's the 40103 down binary counter.
---
That's a 5V part, so it won't work if you're using a 12V supply.
What you need is to use a CD40103B or to modify the circuit so it'll run
on 5V.

darn it, can get the CD40103B ar RS components, but gotta buy 10 of them at
29p each, BUT they are part of the extended range, and incur a Ł10 order
fee!!!! nuts to that.

farnell has the CD40103BE, is that the same?
---
Yes
---
that one is 55p and can buy singles, but they have a minimum order of Ł25,

---
Good news!

Digi-Key UK has them, in stock, no minimum order, no handling charge.

http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=UK&keywords=CD40103&x=21&y=11

---
Shipping, though, is Ł12 for orders under Ł50, free for larger orders.
JF

 

On Thursday, October 30, 2008 7:08:59 PM UTC-5, gazz wrote:

i'm making a home games room, currently have a few old fruit machines, a
pinball machine, jukebox, japanese pachislo machine and so on,

i've converted the coin mechs on them all to take the pachislo tokens,
because i have lots of them, and it's a lot easier than having to keep each
machine stocked with real money for wins.

i've also made a token dispenser, simble wooden cabinet, a coin controls
universal hopper holds the tokens, which it spits out 1 for every pulse of
12 volts it gets,

a coin validator takes real money (to save up for the electric bills

The coin validator takes care of checking the coin is real and it's value,
it then puts out a + 12 volt pulse on one of 5 pins (i.e. so 5p gives a
pulse on say pin 1, 20p gives a pulse on pin 3, 1 pound gives a pulse on pin
5 and so on) each coin registered gives out 1 single pulse.

There are commercial credit boards i can buy for about ?30 to convert the
single pulse on different pins, to output multiple pulses to drive the coin
hopper, but my budget dosent stretch to the price of the commercial board,
not to mention the company that sells it are a pain to order from.

so i thought i'd build my own, should be simple?

i was thinking of maybe 555 timers, but was wondering if anyone has a better
idea, and can give me a circuit diagram to do what i want,
i can solder, draw pcb's in eagle, etch them, buy components,
i just fall down designing the circuits.

what i need is... 5 input pins, which each can take a 12 volt pulse of about
250 milliseconds duration,

depending on which input pin is pulsed, it outputs a set number of 12 volt
pulses on a single ouput pin,
these need to be greater than 5 milliseconds in duration and appart, the
hopper has circuitry in it to store the pulses it recieves, so it can
recieve 100 pulses in what ever time it takes to send them with 5ms delays
and durations, and will pay out 100 tokens in what ever time it takes to do
that.

i need pin 1's input to output 5 pulses, pin 2's input to output 10 pulses,
pin 3's input to output 20 pulses, pin 4's input to output 50 pulses, and
pin 5's input to output 100 pulses.

If possible i'd like it to be able to take multiple input pulses and count
the correct output pulses.. i.e. put in 5 x 20p coins, which will pulse pin
three 5 times, and it outputs 100 pulses,

or it could have a seperate output that goes to 0 volts whilst it is
outputting the pulses... this would be connected to the coin lockout pins on
the coin validator, preventing any new coins being registered and rejecting
them untill the circuit is ready to acceps another coin/pulse output.

Can anyone come up with a circuit diagram to do this?

i am looking for a 16 pin hopper can anyone help? biggem1@gmail.com