Portable Russian Welding Transformer TSB-90-1U3 The russian welding transformer type “TSB-90-1U3” is an industrial manufacturing welding equipment. It is designed for manual metal arc welding (MMA), in alternating current, of low carbon steels with thickness less than 3mm, using 2-3mm electrodes. Quick welding specs MMA welder low carbon steels with maximum thickness of 3mm 2-3mm electrodes…
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Welding Inverter Startup Circuit The input line voltage is rectified and the DC voltage applied to the input filter capacitors. The two input relais and special electronic circuits are used. The present circuit contains precharging circuitry for the safe charging of the input filter capacitors. Once the capacitors are precharged, the input relais are energized,…
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On-Off switch using 2 relays – Four versions The load wired to output of such device is connected and disconnected by each momentarily pressing on a pushbutton. The arrangement haves a toggle flip-flop function, or toggle bistable. The three versions are presented, based on the momentary pushbutton respectively single normally-open, SPDT and DPDT type. If…
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On-Off switch using 3 relays – Fifteen versions ! Since the electrical standards adopted by various nations may vary, the graphical schematic/wiring diagram simbols can also vary (example: DIN, NEMA, IEC, EEMAC, CENELEC). This article uses International/British graphical simbols. For unambiguity, the used simbols are described in the following table: A relay control system is…
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Redresor comandat Articol publicat in revista CONEX CLUB nr.1/2005 Aplicaţia (fig.1) se referă la un redresor comandat cu tiristoare, de tipul cu punct median. Poate avea multiple utilizări, prototipul fiind testat atât pe sarcini rezistive cât şi ca sursă pentru încărcarea unor acumulatoare auto de 12V. Comanda în grilă se face prin intermediul unui…
DetailsIndicator de pozitie Articol publicat in revista CONEX CLUB nr.6/2002 Montajul este destinat în principal indicării poziţiei unei antene sau grup de antene, pe baza unui traductor digital optoelectronic montat pe pilon (outdoor), şi a unui circuit de afişare cu LED-uri dispuse circular, care indică direcţiile de orientare (indoor). El poate avea şi alte aplicaţii care necesită…
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