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How to Set Up an Oxy Acetylene Torch Edited by  Rane, Teresa, Wolfdominic, Mark Davis  and 12 others An Oxygen Acetylene torch is a tool used to bond two pieces of metal together by means of extreme heat. In addition, Oxygen Acetylene torches can be fitted with a "Cutting Head" and used to cut one solid piece of metal into two or more pieces. 1 Clean the nozzle on the head.  This should be done with a fine, round metal file. Just make sure that this nozzle hole is unobstructed. If holes are obstructed, a torch tip bore cleaning tool may be necessary. Ad 2 Securely fasten the "head" of the torch on the end of the hoses.  It should thread into a socket where both the Oxygen and Acetylene hoses come together. Usually this joint is brass. 3 Tighten both valves on the "head" that you just secured in the socket.  Make sure these valves are shut completely; otherwise, your gas/air mixtures will be off. 4 Turn on...

The  build  quality and type of thermal insulation varies so greatly in the Algarve that sometimes this is difficult to easily quantify. A very simple and more accurate way of finding out how much your air conditioning is costing is to turn off all your major appliances in the villa and take an initial meter reading. Come back after an hour and take another meter reading and minus this from the initial reading which will indicate your energy consumption in KW per Hour as a base rate. Turn on all your aircon units on maximum and come back after an hour and take a final reading. Use this formula to estimate your maximum aircon consumption: final reading - (base rate)*2 - initial reading = KW per hour energy consumption of your air conditioning units at maximum. Check your EDP bill and there will be a Euro Rate per KW hour and use this to calculate how much it is costing per hour. You might be surprised at the cost. The reason for this is that most of the cheaper ai...

220V AC siren circuit  See Other projects in :  Alarm systems  •  Mini Projects  And:  Alarm sounds ,  Sirens   Posted by admin - May 16, 2014 at 12:33 am This circuit is a simple siren circuit that use 220V AC as power supply. It is small size and use a piezo speaker cause use low power and saving. How it works This circuit is shown as  Figure 1  which we use power source by reducing AC-voltage of 220 volts down by the resistors-R1, R2 ; the capacitor-C1 act as coupling AC-voltage. Secondly, the current will rectifier into DC voltage by diode bridge D1-D4. And there is C2 function to filter steady DC current. Figure 1 The simple 220V AC siren circuit. The some voltage will flow to emitter lead of Q5 and other will is sent to R3-R6 to reduce voltage to ZD1 before, which it will maintain the steady (DC) current regulated supply at about 9.1 volts. The capacitor-C3 will smooth or filter the pulsating voltage from a p...

12 Volt to 220 Volt Inverter 500W  See Other projects in :  Cool Projects  •  Inverters  •  Mini Projects  And:  2N3055 ,  High Power inverter ,  Home power inverter   Posted by admin - April 11, 2007 at 6:59 am This is circuit Inverter 12VDC to 220V 50Hz 500W. It easy to make and Low cost. Friends favorite circuit about the the inverter, because like working outdoors, or to backup storage to use when necessary. Most of this is circuit low power, which is not suitable for practical applications. My friends said that he would be about 500 Watt. It is a good size. Use with television receivers and light bulbs as well. When looking for circuit. I get headaches. If you are a beginner or I can not buy expensive good quality circuits. Requires only one transistor. Or if you have free time. I want to build old circuit is alive again. This circuit will accommodate all your needs. It is a simple circuit. The same principle, ...