Dirty cheap component tester a. Octopus curve tracer JAMMArcade. Do you have an oscilloscope and you never use it Dont sell it, now I will explain how to turn it into a simple but effective component tester. The name Octopus maybe doesnt say anything alone but if you google it along the words curve tracer you will obtain thousands of result. In few words an Octopus curve tracer is a small circuit that used in conjunction with a scope allows to display the voltage across a component under test on horizontal X axis versus the current through that component on the vertical Y axis. A scope set to X Y mode is required most of them have this feature. There are lot of variants of Octopus circuit, personally I choose this one since it applies small voltage less than 1. VAC and current less than 1m. A allowing to test unpowered components also in circuit without risk of damaging them. As you can from picture above circuit is made of very few common parts there is a transformer 1. VAC to 6. 3. VAC Im in Europe so I used a 2. VAC one, three resistors the 5. Ohm and 1. 00 Ohm ones forms a voltage divider to obtain 1. VAC, then the 1. KOhm one limits current to 1m. A and two probes. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Easily share your publications and get. Digital 2 channel oscilloscope, 70 MHz bandwidth upgradable up to 300 MHz sampling rate up to 2,5 GSas, sample memory up to 20MSa,ADC resolution 10 bit 10. Updated 117. This page is intended to be a reference list of basic specifications for electronic test equipment, especially obsolete models. I have been collecting. There is NO VAT payable on manuals. Please contact me for current prices. We stock manuals from most manufacturers,Tektronix, Phillips, Marconi, Racal, HP etc. The Radiotron RCA Manual rc10 taille 6 Mo Recueil sur les tubes amricains ancien Thorie sur les tubes Utilisations des tubes. This circuit will produce a signature waveform on the oscilloscope to aid in the testing and analysis of shorts, opens, and leakage in just about any electronic component including resistors, capacitors, inductors, diodes,transistors and digital ICs too. Patch Panel Wire Tracking there. Each component has a characteristic waveform called Lissajous pattern, some examples Now, you will wondering what this device has to do with arcadeLATHES, MILLERS, GRINDERS, SHAPERS, BORERS and OTHER MACHINE TOOL Instruction, Operation and Maintenance Manuals, Handbooks and Parts Manuals. Well, personally I find it very uself when I probe ICs out of circuit. For example, in my last repair I was unsure if a 7. LS3. 67 was good or not since I got discordant results from my testers. Lo sapevi che ci sono 74 annunci, affari, oggetti e offerte di lavoro che ti aspettano su Kijiji Trovi anche oscilloscopio. Metechnik Wer viel misst, der misst viel Mist. Vorbereitung, Aufgabenstellung, Megerte, Aufbau, Kalibrierung, Eichen Messen, Mewerte aufzeichnen. Le site dun collectionneur de TSF et Phonos Astuces, Galerie, liens. Sonic 3D Blast Pc Game. PREVIEWS/38933510/23432455/hameg/hameg_hm303-6_oscilloscope_um.pdf_1.png' alt='Hameg Oscilloscope Manual' title='Hameg Oscilloscope Manual' />Probing it with the curve tracer and comparing its patterns with the ones of a good known IC removed all doubts On the right the pattern generated from a good IC 7. LS3. 67, on the left the one from the defective one. Specifically you can see how the junction internally a TTL contains transistors of an output PIN9 is weakened compared to the good one pattern doesnt have the healthy L shape of a good diodebase to collector junctionObviously this curve tracer can be used also to test components in circuit thanks to the low voltagecurrent applied but in this case experience is needed as components can interact each other producing misleading results. The best option would be having a good board as reference. If you want to read more about, I recommend you this document http www.