Stanley A Meyer SCR Switch Gate
This was use on the 8xa basically to gate the house or grid power. from ac to dc with gate
SCR Stanley Meyer
The optocoupler and scr are the heart of the meyer demo circuit can also be used on this frequency generator. the opto coupler is triggered by 5 volts from freqncy gen or a arduino or pc the scr is made to chop a rectified ac power source. such as a wall outlet, with a full wave rectifier on it. the board here has built in most of the componates to make it function
opto coupler. yes the opto has a top speed. it is higher then 1khz
In Meyers Design the optocoupler and scr are the centre of the meyer circuits he showed
SCR board will only work with the 8xa
know wonder I have been having problems with my 9xa board
What are you supposed to use the 9xa board with?
just use one side or channel to work the scr board
the 9xa can run a transistor, for double channels
a scr is a silicone controlled rectifier
a transistor will turn on and off any time you tell it to
You can't use an SCR to drive a step up transformer.
The SCR is used to drive the EC52 core choke coils. If you want to drive a step up transformer, you need a mosfet circuit or a transistor circuit. As I already stated, you can't drive the SCR trigger faster than 120hz.
If You are mixing two different circuits together , you can't do that. The SCR circuit will only work with the 8XA set up.
A compliment to the 9xb and 9xa
SCR s4025l 25 amp
diode t6a 6amp 1000 volt
resistor 100ohm 5 watt or bigger
opto coupler hiidi
1/4 or 1/2 watt 220 ohm
compliment to the 9xb and 9xa
the input is for if you have a different signal gen. i use a different signal gen then the one we sell. i just connect it to that input. then i have the meyer frequency pulsing the scr. i just set my frequency gen to the meyer frequencies. also, if you had a signal gen like say a sound card for your computor.....you can send it to that input. or a hand operated switch even. 5 volts signal will make it fuction. put a 1k resistor instead of a 220 and trigger it with a 12 volt signal.
The scr is just a gate for your 120hz or 100hz....the house power is your frequency and the scr is the gate. the scr must see a pulse in order for it to chop the signal.
The variac is 60 hz ac. then rectified, it becomes 120 hz pulsed DC. the scr is designed to cut the 120 hz DC. so for the scr circuit, it is designed for one channel of that circuit to turn 120 hz on and off
You can't use an SCR to drive a step up transformer. The SCR is used to drive the EC52 core choke coils. If you want to drive a step up transformer, you need a mosfet circuit or a transistor circuit. As I already stated, you can't drive the SCR trigger faster than 120hz. You are mixing two different circuits together and you can't do that. The SCR circuit will only work with the 8XA set up.
Just use one side or channel to work the scr board the 9xa can run a transistor, for double channels a scr is a silicone controlled rectifier a transistor will turn on and off any time you tell it to
You pulse the voltage behind the scr, you do not gate it. (that is your frequency) The Scr is the (gate.) Amp meter can go between the positive choke and the cell and the cell and negative choke. You do not need a rectified pulse from a bridge.A frequency will be determined based on cell capacitance and the choke sizing. You will be able to watch the square pulses and scr turning the circuit off, use 0-100vdc. It is not only a amp inhibiting circuit, it also is a resonate circuit. When you pull water apart you free electrons, you should be able to barely draw a load from the source, yet pull amps worth of electrons loose in the water and have little to no amps pulling thru the negative choke and is also why he used 0-100v.If done correctly in resonance, the power supply will only see a load in the milliamp range. The (threat) of current is what draws the water apart before the current can be used across the cell.So, the main idea behind this is high side current limiting to the choke. The square pulsed frequency ensures that the scr turns off, even if it wants to lock in.
See class Ahttp://share.pdfonline.com/5ae59a0009f44562b8c325f6045f67fb/commutation.pdfYou pulse the voltage behind the scr, you do not gate it. (that is your frequency) The Scr is the (gate.) Amp meter can go between the positive choke and the cell and the cell and negative choke. You do not need a rectified pulse from a bridge.A frequency will be determined based on cell capacitance and the choke sizing. You will be able to watch the square pulses and scr turning the circuit off, use 0-100vdc. It is not only a amp inhibiting circuit, it also is a resonate circuit. When you pull water apart you free electrons, you should be able to barely draw a load from the source, yet pull amps worth of electrons loose in the water and have little to no amps pulling thru the negative choke and is also why he used 0-100v.If done correctly in resonance, the power supply will only see a load in the milliamp range. The (threat) of current is what draws the water apart before the current can be used across the cell.So, the main idea behind this is high side current limiting to the choke. The square pulsed frequency ensures that the scr turns off, even if it wants to lock in.valuable document. thanks!Meyer using the SCR in his early 8XA only showed that he understood how to create an oscillating circuit that was able to switch off the SCR as described in the pdf. whenever he had to switch without these oscillations he used transistors like 2N3055, the most powerful alternative at that time.today we have excellent substitutes called MosFets and there is no need to use SCRs any more for low power applications.
that mean"Meyer known Electronic very well".that is resonant circuit like he said.he didn't create the new word for calling circuit.SCR is popular in 80s-90s.thanks for PDF,Hardkrome.great find.geenee
Places to Buy SCR in Varying Voltages
Stan mentions multiple times in his writings the convenience of not just controlling the pulse width but also the "voltage amplitude"Now in Stans info we find references to "variable voltage amplitude" yet it’s usually in fixed positions in his diagrams. (Selector switch, or variac manual control etc).What do you guys think of trying to apply a varying voltage during a repetitive pulse train?Usually we only apply a fixed voltage pulse. And if we get it right this charges the cell.Now imagine a step increasing voltage amplitude pulse. During step charging our cell. Acording to stan it should enhance the polarization process.Let me know what you guys think, should i follow this rabbit?In the video bellow I attempt to explain how to achieve this electronically using a sequential circuit to trigger multiple SCR gates sequentially during repetitive pulse trains.
I have a LED Digital Panel Frequency Meter Range: 0 ~ 9999Hz
I was thinking of putting it on the SCR to give a reading of the frequency I am looking for and to make sure I have the 120hz.
Would it be better to put the connection at the cell after the inductor?
What is your suggestion?
is it a ac freq meter?
the frequency meters will not read the frequency correctly if the frequency has a gate applied.
the house power will be 50 to 60 hz ac wich converts to 100 to 120 hz dc pulsed, it will not change.
if you have a good o'scope, it will show the frequencies
Note the Pic on left is not correct
Note From MAx
maybe you need to buy a shunt with that amp meter? did it come with one?
when we make boards, we often have multiple uses for one board.
everyone wants to try meyer boards, so we try to make them simple, wire here or there
the input is for if you have a different signal gen. i use a different signal gen then the one we sell. i just connect it to that input. then i have the meyer frequency pulsing the scr. i just set my frequency gen to the meyer frequencies.
also, if you had a signal gen like say a sound card for your computor.....you can send it to that input. or a hand operated switch even.
5 volts signal will make it fuction. put a 1k resistor instead of a 220 and trigger it with a 12 volt signal..........
Non Meyer Switch Options
The optocoupler and scr are the heart of the meyer demo circuit
In your youtube videos you put
a SCR with a diferent case...i'm asking
because where i live these kind of
electronics does not exist.
Wich is the comercial code of SCR? Or how
Can i order it if i go to a radioshack?
they come in different cases. there will be 3 pin outs
find one 10 to 20 amps, and a heat sink.
the ones i use are 20 amp, 400 volts i think.
if you got the scr board from me. look up the number listed on the scr pinout. find the pin out of that scr, and match it to the one you are buying.
the scr just goes off when the voltage ripples
scr is silicone controlled rectifier
its just a diode that comes on when you tell it to
also check the turn on voltage to match the one i listed
i shyed away from this for a while..you have cleared up so much for me. linear transmissions, Magnetic flip-flops, BiASING hemholts layers! this is parametrics you know, like a child on a swing, which if she times her kicks right .. the sky is the limit u no. besides the length of the chain of corse . I have two question tho , in order to make gas "on demand" like, 5 gph consumption rates... how do i ask... i can trust seeing water between two adjustable plates, no prob... The ERxxx is coaxial tho. pos on the outer electrode, neg crosses over and touches the inner electrode....BUT does that "neg" bottom choke touch outer pos electrode as well?? if we do this itz a short yes, but its cool cuz were only messing with FIELDS yes? i mean,, couldent i just take the other end of my B+ & B- and place it across my adjustable plates ? let energy bounce between the two vessles? i mean,, transmitt, in series...recieve in parrralell , use a loop to couple the regeneratave feedback energy into a Cavity?? And please one more question, what do AM coupling loops have to do with us? thanks again
in series, the neg wire goes to the next tube sets pos wire. like wirering capacitors in series. as you do, the capacitance goes down. you also have the resistance of the water. it is a short with electrolyte in the water. with no electrolyte, you pulse it in such away that there is no short. stan says that in his papers.
should be able to use the adjustable plates, i will assemble that soon
AM coupling..............most likely the process is like an AM transmission.
the 9xa was designed by stan for a gate and a main frequency to drive a transistor. the scr is as explained in detail a chopping circuit for mains rectified signals. used in the 8xa display circuit
so why make the 9XA if you aren't going to use the gating frequency?
doesn't Stan say that he uses a gated pulse train?
this board is your design.
I would think you'd know how to connect it so the output is the gated pulse
the design is stan meyers, it is for a transistor
half of it will work for the scr, as described. a scr is not a transistor
the scr makes the gate for rectified house voltage as stan designed. each one is stans design, as described exactly
the board is marked for series connection to the transistor
I don’t know why you use a 9XB, when it has no gate.
I don’t know how many patent pictures I have seen with
the pulse, pulse, pulse, gate ,and then pulse, pulse, pulse etc.
the 9XA is your design, your board,
I would think that you would know
how to connect it so as to get the gated pulse train.
you show a lot in your videos,
but without a concise schematic
and the values you are using and the frequency you are at in
Yes, it is printed on the board, then why do you show me a 9XB connection?
a scr does not make a pulse. you can not use a scr that way.
you need a transistor to make a pulse
a scr is not a transistor.
if you want a 9xb, just use half the 9xa to fire the scr, then you have a 9xb, for the 8xa circuit.
the 9xa and the 9xb are stan meyers design. they do what they did for stan.
if you want to fire a transistor, then you need a transistor
this thread clearly shows how the 8xa funtions with the scr circuit
nowhere in any of these last posts did you explain how to connect the 9XA (that has two oscillators) to a scr or transistor to get a gated pulse train.
do you know how?
ou asked me how to hook up the scr.
the question was plainly answered.
the transistor question was already answered here
you just put optocouplers in series as they are marked
and mike, you are being a little rude. in case you dont realize that.
a scr is not a transistor, you asked how to connect the scr. and i told you how. this thread also has in depth details on the scr. scr stands for silicone rectifier. its a diode with a on switch.
you can wire it like you posted here for a transistor. and wire it like the 2n3055 pic i posted in responce to your 2n3055 question.
pin 4,5 and 6 are a NPN transistor on the optocoupler.
6 is the top pin on the right, not connected.........base of the optocoupler transistor.
pin 4 goes in the direction of ground, to the base of the 2n3055.
pin 5 in the middle is from the positive side of the circuit
none of which has anything to do with a SCR
the SCR is the gate for 120hz rectified house power, as shown in this thread. for the scr you just use one side of the 9xa as shown earlier
As I try to run my SCR diode, I have some questions about it, but before please tell me if I understand the SCR driver functionning...
1 - KBU808 rectify the main AC power from the variac or something else from 24V up to 36V.
2 - Now, power is available to supply SCR diode (AC or DC power, I don't know yet, but a fully positive/unipolar rise and fall power to run the SCR diode) and H11D1 optocoupler (via a 100K resistor )
3 - The H11D1 is triggered by Signal 2 (square wave with eventually gatting ΠΠΠ__ΠΠΠ__)
4 - Signal 1 is now available from H11D1 to trigger the SCR diode. Signal 1 is not a square wave but a rise and fall wave with eventually gatting ∩∩∩__∩∩∩__.
5 - The 6 Amp 1000V diode is there to prevent from back emf from the VIC.
- The rise and fall wave needed to run the SCR diode is needed on the gate pin or on the anode pin or on both of them?
- What is for the 1N4007 diode on the schematics ?
that is what rectified AC looks like___ being ground ∩∩∩ being 120 hz. 60 hz AC retified becomes 120 hz pulsed DC
that setup with the parts i listed can handle over 220 volts
the 8xa circuit as designed by meyer is a 50% duty cycle as a gate to the 120hz
the 1000 volt diode keeps the positive pulse from being BEMF, and set up stans VIC circuit
the 1n4007 is a protection diode for the scr
see if this thread explains your questions
the 36 volt transformer picture was just a minimum voltage suggestion. meyer used a 120 volt 5 amp powerstat variac(auto transformer)
read this topic several times yet, each time with a new understanding (beter ?) but there is lot of informations here and elsewhere and amalgams and misunderstandings are easy to make.
So, if I understand the situation in this circuit :
- Frequency is fixed --> 2 x 60 Hz = 120 Hz (in North America) ; 2 x 50 Hz = 100 Hz (in Europe)
- the resonance of the circuit is obtained by setting up the gate's frequency duty cycle.
- the variable voltage amplitude of the wave form just give more power when resonance is reached.
So if I want to use a SCR diode, I "just" need a 50% duty cycle gate signal with adjustable frequency to trigger the optocoupler and then the SCR diode.
I made a mistake (one more) thinking that the triggering signal must be as in Lawton circuit, 2 stages (1 for variable "high" frequency and 1 for the gate "low" frequency) and then pulsed in power transistor. But as you said it before... a SCR diode is not a power transistor.
So, I have started to build my SCR driver on a "proto board". Not finished yet because some components are missing, but I've checked the the bridge rectifier and it seems that something goes wrong...
Here are the scope shot I have made just out of KBU808
As I was testing my circuit, my settings was as follow :
1 - A step down transformer 220V/18V ( a cordless charger that deliver 20V in fact)
2 - A "Variac" like repaired 0 to 240V . With the transformer above, I get 0 to 26V.
3 - Then my SCR circuit. T