# Electronic Circuits Forum

Electronic circuit & projects discussion forum for Electronic enthusiasts to share and discuss. Place to discuss about electronic circuits, projects and hobby stuff.

## How make a DC switching polarity cercut 27V, 50 micro amp

Discuss about electronic circuits here. Request help for circuits that you couldn't find anywhere else, how a circuit works etc. Discuss anything related to electronic circuits.

Moderator: pebe

### How make a DC switching polarity cercut 27V, 50 micro amp

Greetings , I am interested in Robert Beck health inventions, Does anyone know how to make a 27 volt DC output reversing polarity circuit? I also also need to know how to adjust the frequency around 528 Hz. Thank you
bioelectric

Posts: 3
Joined: Sun Apr 22, 2012 10:16 pm

### Re: How make a DC switching polarity cercut 27V, 50 micro am

Forums normally do not like it when a poster is directed to another web page. Unfortunately I do not know how to make a link nor how to post an attachment so if I am transgressing please forgive me Pebe.

There are some circuit diagrams of Dr Robert Beck to be found at www.sharinghealth.com.
At the bottom of the page there is a heading "PDF articles" below it are some headings that you can click on. One of them is the circuit diagram of the equipment you wish to build.

It is an oscillator - square wave - running at 4 Hz with three 9 Volt batteries in series to give the 27 Volts output.
I_Daniel

Posts: 74
Joined: Wed Sep 21, 2011 12:57 pm
Location: Pretoria

### Re: How make a DC switching polarity cercut 27V, 50 micro am

Thank you for your help. A spin off of Beck's work a company has developed a light therapy device " Light Works by Sota and Quantum Scalar Lasers, they used hi intensity LED's that are "tuned" to radiate at different inadequacies ie. 369, 528 Hz. etc. How does one make such a "tuned" LED or laser. how would you tune a LED? Thank you, Bill
bioelectric

Posts: 3
Joined: Sun Apr 22, 2012 10:16 pm

### Re: How make a DC switching polarity cercut 27V, 50 micro am

Purely experimental; I would look up a 555 IC schematic which has a variable frequency output from 1 to 1000Hz and then connect the output to an LED. To get the frequencies you want you could also calculate the capacitor and resistor values required for a specific frequency.
This LED will then pulse at the frequency of the oscillator.

I am sure you can do a Google search and get quite a lot of information on the 555 IC. and also how to calculate the required frequencies.
I_Daniel

Posts: 74
Joined: Wed Sep 21, 2011 12:57 pm
Location: Pretoria

### Re: How make a DC switching frequacies

Sure sounds easy enough but at this point I am not sure if I am going to count a sign wave frequency or some other avenue or rate of frequency. At this point my initial search just tells me that there are different ways of integrating these frequencies and not much else . Thanks
bioelectric

Posts: 3
Joined: Sun Apr 22, 2012 10:16 pm

### Re: How make a DC switching polarity cercut 27V, 50 micro am

If you use a high stability capacitor and a low tolerance resistor you should get a reasonably accurate frequency of operation. Even if it is 10% off it will still work as required. even 500 to 650 Hz should work. So there is not really a need for a frequency counter unless you wish to make it super-duper accurate.

To stimulate the knitting of broken bones a small computer 3 Volt battery was used across the break. This can even be used to see how it affects Rheumatism. The 27 Volt circuit was originally 35 Volt

If you are interested do some experiments. Experiments are not overnight ah ha's unless you use existing technology and tried and proven equipment.
I_Daniel

Posts: 74
Joined: Wed Sep 21, 2011 12:57 pm
Location: Pretoria

### Re: How make a DC switching polarity cercut 27V, 50 micro am

Some further information: How to make a fixed (switchable) multi-frequency 555 oscillator (In this case it is a square wave)
Calculate the RC (Resistors and + Capacitor combination) for one frequency. the 2 resistor values for that one frequency is then used when you calculate the two other frequencies. i.e only the capacitor changes value. Use a tantalum capacitor their leakage is low and thus they ensure better stability. The 555 IC can be used from 5 to 15 Volts. (Also look at the later CMOS 555 IC's)

You can then use a rotary switch to change from one capacitor to another. i.e switching from one frequency to the other.

With a power supply of say 30 Volts A simple zener diode regulator ( 9 to 12 Volt) can be used to power the 555 and a one transistor amplifier connected to the output of the 555 and the 30 Volt supply will give the higher voltage required at the output. This will do the same as the Beck design without using two power supplies and relays. Beck's special probes are not necessary since it is the frequency and electricity that do the work.
I_Daniel

Posts: 74
Joined: Wed Sep 21, 2011 12:57 pm
Location: Pretoria

### Re: How make a DC switching polarity cercut 27V, 50 micro am

How to use the oscillator circuit for light therapy is that you use a high intensity LED connected to the output of the 555 oscillator. For a 9 Volt supply you can use a 330 Ohm resistor in series with a LED a from the + voltage to pin 3. From pin 3 to - (ground) another 330 Ohm resistor in series with a LED is used. Because of the frequencies involved you will see the LED as constantly on but this is not so they are "pulsing" at the output frequency.

This is the basics so try some experimenting.
I_Daniel

Posts: 74
Joined: Wed Sep 21, 2011 12:57 pm
Location: Pretoria