XL500 sample timing

[Qiaozhi]

the schematics you have drawn the parts on is different to my xl500 if you have a look at my photo.The 3055 in mine is a RFP8N18L and on mine there is no MPSU60(I couldnt find anywhere on the net a schematic for this version of the xl500 )

Here's the schematic I have in my data archive. Is it incorrect?

[Micheal]

There are similarities but it is not the same one,(i am currently considering throwing the whole thing in the rubbish bin,but sledge hammering it first)

[Qiaozhi]

There are similarities but it is not the same one,(i am currently considering throwing the whole thing in the rubbish bin,but sledge hammering it first)

Do you have the correct schematic?
If so, please can you post it here?

[Micheal]

Sorry I dont have the correct schematic for this model ,and I cant find it anywhere on the internet.It will make things a lot more easier if anybody has it.

[mmlove2007]

Hello to all Dear

If someone has a circuit xl500 Please complete this section to upload files together with Pcb

[homefire]

Hello to all Dear

If someone has a circuit xl500 Please complete this section to upload files together with Pcb

Go back through the pages of this thread and you will find it all.

[mmlove2007]

i can old pcb in pdf file

is not pcb xl500

[pebe]

Micheal,
You may be interested in this free software that makes your PC into a oscilloscope, using the sound card in your PC.

http://www.zeitnitz.de/Christian/scope_en

The 'scope has a limited frequency response, and is intended mainly for audio circuits. But will probably give you a fair idea of what's going on in most MD circuit.

It also has a frequency analyser for frequencies up to 20kHz, which you can use to measure the frequency of an oscillator. There is also an audio oscillator.

As I said, it is limited in its use, but -heh - it'd FREE. So why not dowload it and try it? Take note of the need to use a resistive attenuator if the circuit you are measuring exceeds 5V.

[mmlove2007]

please uplodae full cicuit

thank you

[ahmet19]

xl500 digital

xl-500 full digital

[mikebg]

Errata in design of pro-TR (posting #190):
1. The resistance of R7 should be lower ohm for fast charging and discharging input capacitance of Q1.
2. Tere is no point connecting R41 to R39 & R40.

[selim]

xl-500 analog

http://www.geotech1.com/forums/showthread.php?t=12840

[ahmet19]

Errata in design of pro-TR (posting #190):
1. The resistance of R7 should be lower ohm for fast charging and discharging input capacitance of Q1.
2. Tere is no point connecting R41 to R39 & R40.

ok..
1.R7= 100R~470R
2.you're right, I was doing a drawing error

[smity]

For ahmet19

What is "XL-500 DIGITAL PI"? Who repeated it? Characteristics? A photo? Video? PCB? Software? Coil? Or it simply theory?

[ahmet19]

What is "XL-500 DIGITAL PI"? Who repeated it? Characteristics? A photo? Video? PCB? Software? Coil? Or it simply theory?

hi
I designed the XL-500 digital. If you want to do if the PCB of my stock. Software no problem. I've made a similar escape attempt. I made such an analog circuit and digital delta pulse.
I'm ready for my XL-500 PCB. But will you make it. I also write software.