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[Carlos]

Hola olecram1. Me fijo las que les puse, yo en realidad instale un condensador de buena calidad de 47nf como oscilador del 555 para que sea estable en funcion de la temperatura y ajuste las resistencias para tener una frecuencia aproximada de 400 hz. y un periodo de 100uS. si pones potenciometros como aproximacion y ajustas viendo en el osciloscopio te daras cuenta de los valores de dichas resistencias.
Carlos

Hello olecram1. I notice that I put, I actually install a good quality capacitor 47nF as the 555 oscillator to be stable as a function of temperature and adjust the resistors to have a frequency of about 400 Hz. and a period of 100us. if you put as approximation and adjust potentiometers seeing on the oscilloscope you will notice the values of these resistors.
Carlos

[olecram1]

Gracias Carlos, estaba errado en la frecuencia, hago los cambios y te cuento.

Thanks Carlos, was wrong in frequency, I change it and tell you

[Carlos]

Hello again, attached to this note, I send the modified circuit. in the voltage doubler circuit, invert the polarity of the last capacitor 47uF. You must enter a 100nF capacitor at the input of the power supply so as to eliminate the noises produced by the oscillator circuit 555 that performs the duplication of tension.
Carlos

[Carlos]

http://www.youtube.com/watch?v=RWgHZM3RahQ

[Carlos]

New video

https://www.youtube.com/watch?v=V0ZZN45r2sc

[bernte_one]

hello carlos,

good layout and thanks for sharing the Infos with us
do you permitt me that i can use you layout and adapt it to layout Software
simple paper drawing is heavy to handly if People want to make their own pcb
so i will produce a black White Image and a silkscreen

[bernte_one]

another Thing Carlos

can you explain what resistors you have soldered direct on the blue multiturn pot on your first Fotos?

[Carlos]

I not remember this resistor, but now i use a 50K potentiometer. If you make a pbc i can see your progrest

Carlos

another Thing Carlos

can you explain what resistors you have soldered direct on the blue multiturn pot on your first Fotos?

[Carlos]

Replace the preset low voltage detector TL431 by two resistors of 4,7K and 1,8K another. also install a 0.1 uF capacitor in parallel with this resistance to prevent oscillations. Carlos

[RS_Phil]

Replace the preset low voltage detector TL431 by two resistors of 4,7K and 1,8K another. also install a 0.1 uF capacitor in parallel with this resistance to prevent oscillations. Carlos

Hi Carlos what is the difference between your project and this one?

[Carlos]

Hello Saromines Ramiel, the differences are many, the MOSFET transistor, the first integrated, has the coupling capacitor and the preset instead has offset adjustment for the P fet in the oscillator 555 which acts as a variable resistor, metal-silence on the coil, low voltage control with LED diode.
Carlos

[RS_Phil]

Hello Saromines Ramiel, the differences are many, the MOSFET transistor, the first integrated, has the coupling capacitor and the preset instead has offset adjustment for the P fet in the oscillator 555 which acts as a variable resistor, metal-silence on the coil, low voltage control with LED diode.
Carlos

Nice Carlos, can you post the circuit my friend let's see and build that one..

[Carlos]

It is the same as the sandbanks that you can see on this site, with the difference and comment.

Carlos

[daihatsu]

Hola a todos, insistiendo una vez mas con el Sandbanks (Proscan) etc.etc. modifique el PCB acondicionandolo para conectar un mosFet IRF740 y como en mi pais no se consigue mas el uA709 (al IC LM709 no lo pude hacer funcionar, modifique el PCB para conectar el IC LM318. Como les comente anteriormente incorpore un detector de bateria baja con el TL431 y funciona perfectamente. Realice mis experiencias con la impresora LASER para hacer los PCB y me salen perfectas las placas. Para quien desee experimentar les mando el PCB y la disposicion de los componentes, cualquier duda me consultan que con gusto les dare mis experiencias.

Hello to all, insisting once again with the Sandbanks (Proscan) etc.etc. it modifies the PCB preparing it to connect mosFet IRF740 and as in my country it is not obtained but uA709 (to IC LM709 not I could make work, modifies the PCB to connect IC LM318. As it comments to them previously it incorporates a detector of low battery with the TL431 and works perfectly. Make my experiences with the laser printer to make the PCB and they leave perfect the plates to me. For who wishes to experience them control the PCB and the disposition of the components, any doubt consults that with taste them to me dare my experiences.

Please sir this PCB related to which schematic? The video is amazing, I plan to build this. Thanks

[daihatsu]

it is sandbank

Hello everyone, after looking, well it is sandbank with some mods especially the IRF740 replaces std transistor,thanks Carlos