Osciloscop

[miron1947]

Daca doreste cineva sa construiasca un osciloscop,este o schema in Tehnium,numerele 7,8,9/`84.Daca nu aveti numerele respective si doriti sa-l construiti,scrieti aici si am sa scanez articolele.

[donpetru]

Dl miron1947, ar fi utila postarea acelei scheme aici.

 

P.S. Stiu la ce schema de osciloscop va referiti. Din pacate nu am un scanner... :(

[Barbos Radu]

Da e super schema , o am si eu dar nu am scanner asa ca nu o pot posta in rest daca o faceti bafta !

[miron1947]

Fisierele au 561KB-910KB-1,29MB-1,44MB-891KB

Atasez aici,sau mai bine trimit celor interesati pe e-mail,sau yahoo messenger,(am acelasi ID).

Mai au ceva purici.

[miron1947]

Unul RFT.

[miron1947]

O solutie de osciloscop cu PC-ul.

http://scopeonpc.tripod.com/index.htm

P.S.

Pentru cine nu are,cred ca merita,putand fi achizitionat un sistem mai vechi, la mana a doua,in scopul acesta.

[edy_wheazel]

Osciloscolpul pe PC poate fi solutia econimica pt. un electronist, singurul element care trebuie realizat fiind interfata cu calculatorul, restul e software. O singura mare problema trebuie avuta in vedere daca se opteaza pt. asa ceva, si anume protectia portului pe care se realizeaza interfatarea. Montajul ar trebui sa fie izolat fata de port (buffere, optocuploare, etc.) si bine verificat inainte de a fi conectat. "Prajirea" portul din cauza "osciloscopului" ar putea fi extrem de "amuzanta" pt. fericitul posesor al aparatului.

[miron1947]

O alta solutie de realizare a unui osciloscop.

[adry]

Conteaza marca, daca e alb negru sau color si alti parametrii?

[miron1947]

Conteaza marca, daca e alb negru sau color si alti parametrii?

Pentru simplitatea montajului,este preferabil sa fie alb-negru(ex.TV sport).

[Adierea]

Asta este schema a osciloscopului PCS500 de la Vellman

 

Date tehnice:

inputs: 2 channels, 1 external trigger input

- input impedance : 1 Mohm / 30pF

- frequency response ?3dB: 0 Hz to 50 MHz

- maximum input voltage : 100V (AC + DC)

- input coupling : DC, AC and GND

- Optical ISOLATED from computer

- supply voltage : 9 - 10Vdc / 1000mA

In Romania costa cam 20.000.000 lei vechi

PCS500_9a_cir.pdf

[Adierea]

Un osciloscop pe portul paralel ,fara memorie interna ,care are o schema foarte simpla am preluoato cam de mult ,de la adresa de sait ,aici gasiti si soft cu o versiune free.

 

http://www.volny.cz-elecon-cz-lptoscilosko...ky-schema_gif_f

LPT oscilloscope

 

1. Introduction

For this constructions I was inspired LPTScope from Bojan Banko. I build a new hardware and modify software with permission from author.

This construction is free for personal use, for commercial use you need permission from author (from author original software too).

 

 

 

 

 

2.Technical statements

Supply voltage ~9 - 15V

Input voltage DC/AC (peak to peak) 0,2V; 0,5V; 1V; 2,5V; 5V; 25V

Max. input voltage 100V

Input resistance 1MW

Maximal sample rate theoretical 600kHz

practical 300kHz

Vertical shifting of zero -10% to +60% input range

Setting up of trigger 0 to 100% input range

Connection to PC bidirectional LPT port

 

 

3.Circuit

For A/D converter I use TLC0820 with protection resistors R1-R8. Input circuit created voltage divider 1:5 with switch PR1.

Switch PR3 set up zero for input and switch PR4 set up measure of AC/DC signal.

Input amplifier is created IO2A. Switch PR2 set up amplify 1:1, 10:1 and 25:1. Summary amplifier is created IO2B and shifting zero for measure AC signal.

Potentiometer P2 and IO2D set up trigger.

The oscilloscope use several stabilized DC voltages +5V (IO5), +9V (IO3), -9V (IO4).

 

4. Mechanical design

For construction is used one side PCB with several connection wires (layout chart of components). For oscilloscope is used box U-KM26, see figure 1 - 2 - 3.

 

5. Setting up

First you install supply part inclusive of K3. You check on voltage +5V, +9V, -9V. Now you install IO2 and all components except IO1 and check function. If it is all right, you can install IO1 and resistors R1-R8 (SMD).

You must set LPT1 on bidirectional or ECP or EPP in BIOS and then connect oscilloscope to LPT1 port PC.

 

6. Software LPTScope

Program is freeware, included source code.

If you connect hardware for the first time, you start measurement - pres button "Run". You should to see horizontal black line. Line have vertical shifting, when you turning potentiometer P1. When line not shifting, you must set regular reading from A/D converter (press button AD on toolbar) by means of set up number waiting cycles. You turning potentiometer P1 and look at voltmeter. You must see stable data and data must react to turning potentiometer. Regular reading you check up on to signal applied to input.

One record - activate measure, after buffer is full, measure be stoped

TRG INT - internal software trigger

TRG EXT - internal hardware trigger from input signal. You can modify hardware to external trigger

Violet line - shifting zero of input signal. When is negative shifting, negative voltage not display (it display as zero).

Use mouse - when you press left button, you can movie mouse and you will see voltage (Y axis) and time and frequency (X axis)

Time base - set scale on axis X

Y base - set scale on axis Y

Oscilloscope input correction - for right display input voltage (input range)

Sampling rate - setting up when set number waiting cycles for reading from A/D converter

Sample buffer - for saving data from A/D converter. Use max 10000 for oscilloscope and max 1000000 for One record mode

You can see max 32000 points on the screen. When sample buffer is bigger and you want to see whole buffer, you must set bigger Time base = 32000/(Sampling rate * Sample buffer).

 

Download LPTScope version 1.3

Download source code

 

7. Components list

Electrolytic capacitors

C1,C2 220 uF/25V

C3,C4,C6,C7 47 uF/16V

C5 100 uF/25V

C23 22uF/16V

 

Ceramic capacitors

C8, C9,C10,C11,C12,

C13,C14,C15,C16 100 nF

C18,C17 22 pF

C20 12 pF

C21 47 pF

 

Plastic capacitors

C19 100 nF/250V

C22 100 pF/250V

 

Diode

D2,D1 1N4005

D3,D4,D7 BAT48

D5,D6 1N4148

ZD1 BZX83V5,6V

ZD2,ZD3 BZX83V10

ZD4 BZX83V5V1

 

Integrated circuit

IO1 TLC0820

IO2 TL074

IO3 78L09

IO4 79L09

IO5 78L05

 

 

Connectors

K1 CAN25VP

K2 BNC-Z 50RW

K3 SCD-016

 

Inductors

L2,L1 220 uH

 

Switches

PR1,PR3,PR4 P-B143

PR2 P-GS373

 

Potentiometers PC 1221N

P2,P1 10k

 

Resistors SMD 1206

R1,R2,R3,R4,R5,R6,R7,R8 680

 

Resistors 0,4W

R9 1k

R10,R11 100k

R12 120k

R13 680k

R15,R20,R21,R22,

R23,R24,R25 4k7

R16 470

R17 56

R18 180

R19 15

R26,R30 10k

R27 15k

R28 22k

R29,R31,R33 10k

R32 8k2

 

Resistors 2W

R14 10k

 

--------------------------------------------------------------------------------

[Vizitator crriss]

Asta este schema a osciloscopului PCS500 de la Vellman

 

poti sa uiti de schema asta, atata timp cat nu ai config file-ul pentu PAL. in plus schema are si cateva greseli evidente (mai mult sau mai putin intentionate)

 

In Romania costa cam 20.000.000 lei vechi

 

pret aberant pentru complexitatea si performantele schemei, la banii astia cumperi un osciloscop semiprofesional second hand care nu se poate compara cu ariciul asta.

 

un proiect complet si foarte simplu, ne pune la dispozitie nenea vasilica grecu. performantele sunt modeste dar pentru inceput e suficient. plus ca, cu unele modificari (folosirea unui ADC extern, conectat paralel cu AVR) bada se poate extinde la peste 20 KHz.

 

http://www.serasidis.gr/circuits/AVR_oscil...scilloscope.htm

[Adierea]

20KHz mai bine folosesti placa de sunet cu o adaptare pentru tensiuni mai mari .

Daca vrei sa folosesti portu paralel poti sa faci unu destul de sinplu pana la 200KHz fara nici o problema .

Configuratia pentru PAL o am eu dar nu am avut timp sa o pun aici iar schema este de pe un disc original ce greseli are mai concret ca ma intereseaza si pe mine ,iar softu este unu singur pentru mai multe dispozitive mai exact pentru toate tipurile de osciloscoape ,generator de functii cu fereastra de editare a formei de unda etc.

Pretu pe care lam pus acolo este pentru osciloscopu gata facut nu a conponentelor .

[ola_nicolas]

Cine vrea satransforme receptorul Tv in osciloscop, fara sa desfaca nici macar capacul, poate incerca schema prezentata in Tehnium nr. 5/1984 de la pagina 12/13. Pentru simplitate am realizat un montaj care cuprinde intregul articol. Cine vrea sa vada un caz grosolan de plagiat (aproape 100 %) poate sa vada aceeasi schema rearanjata si semnata de un alt "autor" in Tehnium 5/6-90 la pagina 12

Editat Martie 22, 2015 de ola_nicolas