They are wired so that operation of either switch will control the light.This arrangement is often found in stairways, with one switch upstairs and one switch downstairs or in long hallways with a switch at either end.Here we have a two way switching system that utilises two single gang two way switches and a three wire control, shown in the old cable colours.It is possible to achieve a similar result using a two wire control which, although it saves on cable, is not recommended.This is the preferred approach.Here we a have a schematic Fig 1 which makes it easy to visualise how this circuit works.In this state the lamp is off, changing the position of either switch will switch the live to the lamp turning it on.If you now change the position of the other switch the circuit is broken once again.Fig 1 Two way switching schematic wiring diagram 3 wire controlThe schematic is nice and simple to visualise the principal of how this works but is little help when it coms to actually wiring this up in real lifeFig 2 below shows how we achieve this configuration.Just like any loop in loop out radial circuit, the switch cable from the ceiling rose contains two wires, a permanent live and a switched live.This is cable C below, one wire connects to L1 and the other to L2 on the top switch.Cable D Fig 2 is a three core and earth, this is the 3 wire control that links the two light switches together.COM on the first switch connects to COM on the second switch, L1 on the first switch connects to L1 on the second, and L2 on the first switch connects to L2 on the second.All earth wires should connect to the earth terminal in the switch back box and if you are using metal switches there MUST be a loop from this earth terminal to the one on the switch plate see note A on Fig 2Fig 2 Two way switching using a 3 wire control shown in the old cable coloursNOTE The blue and yellow wires in cable D and the black wire in cable C are switched lives and thus should be marked with red sheathing at each end as shown.Two-Way-Wiring.jpg' alt='How To Install A Double Dimmer Switch Uk' title='How To Install A Double Dimmer Switch Uk' />So youre new to SmartThings, you asked a question, and someone suggested custom code as an answer.Or you were browsing the forums, and you found something that.Install a Ceiling Fan and Wire the Switch Continuing with this ceiling fan installation I have stapled the cable close to the area where the new ceiling fan box will.SVN Log R60 LeeDrOiD U V2.Stable October 4th Update SuperSU v2.SR5 Update Shortcutter V4.Update patch HTC Camera force JPG 100 quality 0.There is a chance that if your house has these old wiring colours the switch drops may be from a loop in loop out radial lighting circuit done with junction boxes rather than ceiling roses as shown in Fig 2.The switch wiring is all the same but the switch wire cable C leads up to a different set up.Fig 3 3 way switching wired to a loop in loop out radial lighting circuit done with junction boxes.Various Schematics and Diagrams.This design is very similar to the Archer model see the section.Archer Mini Flashlight Fluorescent Lamp Inverter, but.T5. lamp. Thus, a lower voltage transformer can be used.T1 is an E core ferrite transformer.The core is 12 x 58 x 31.The outer legs of the core are 33.The central leg. is 31.The square nylon bobbin has a diameter of 51.There. is a. 0. 10 estimate gap spacer in between the two halves of the E core.The 1. 60. T O Output is wound first followed by the 1.T H Heater, 3. 2T D.Drive, and 1. 6 T F Feedback windings.There should be a strip of mylar.The number of turns were estimated after unsoldering the transformer from.The wire sizes were determined by matching the diameters of the visible.AWG. The number of turns in the Output winding was determined based on its.A 1. 00 k. Hz. 1 V p p signal was then injected into the Drive winding.The. amplitudes and phases relationship of the resulting outputs from the.Feedback, Heater, and Output windings were then measured.From these. the ratios of the number of turns and winding startend were determined.The transistor was an MPX9.I was not able to locate specs for this.N3. 05. 3 or ECG2.For PNP. types, reverse the polarities of the power supply and C1.Since it is very low power, no heat sink is used in the Energizer.However, for other applications, one may be needed.Some experimentation with component values may improve performance for.When testing, use a variable power supply so you get a feel for how much.Component values are.C2 and C3, the number of turns on each of.T1, and the gain of your particular transistor.WARNING Output is high voltage and dangerous.Take appropriate.NOT connected. Back to Sams Schematic Collection Table of Contents. Pictures Of Cracked Cylinder Block . Schematic from Axel Kanne axel.This was reverse engineered from a toy pocket blacklight, made in China.It has been tested with tubes up to 6 W.V 4 T12. R2. W1. C1 W3 FL1.F C C3 3. V Q1. E u.F. C2. F R1 W2. The original transistor is marked 8.C0. ZC. A 2. N3. 05.T1 is a ferrite E core transformer measuring 1.The core. seems to be 5 mm thick.The turns ratio has not been determined.Winding. W1 is made of 0.The data for. winding W2 is the same as winding W1.Winding W3 is made of 0.The original tube is an F4.T5. BLB blacklight tube, but the inverter has been.F4. T5 tube as well as a Philips 6.W tube. The 6. W tube.N3. 05. 5 or. similar power NPN is recommended.V seems to be the absolute minimal voltage required to start an F4.T5. tube. 5. V will start the 6.W tube when a 2. N3.Voltage. can probably be cranked up above 1.V, but that was the highest I tried.Didnt want to test when the tube blows.CAUTION The inverter can give a nice shock when run with the original.V. With a 2. N3. 05.Avoid touching the tube terminals.The bottom of the PCB can also give.I discovered. NOT connected.Back to Sams Schematic Collection Table of Contents.The circuit below was reverse engineered from a model number FL 1.Made. in Hong Kong battery 8 AA cells or 1.V wall adapter powered portable.The bulb is an F8 T5.This design can easily be modified for many other uses at lower or higher.Note that its topology is similar to that of the circuit described.Super Simple Inverter.C2. 0. 1 u. F. T1 3.R1 1. 5. K 4 o. T F.FL1. o O 3. T F8 T5.T D. R2 2. C1 Q1 5.VDC 1. 00 u. F. V C.C3 E NPN O Output.F D Drive. F Feedback.T1 is an E core ferrite transformer.The core is 58 x 34 x 31.The outer legs of the core are 33.The central leg is.The square nylon bobbin has a diameter of 51.There is. no visible spacer between the cores but I did not disassemble to confirm.The 3. 50. T O Output is wound first followed by the 2.T D Drive and 1. T F.Feedback windings.There should be a strip of mylar insulating tape.The number of turns were estimated without disassembly as follows The resistances of each of the windings was measured to determine the.The inverter was run at just enough input voltage for it to oscillate.From this, the ratios for the windings were determined.An estimate was made of the number of turns likely to be on the Drive.The number of turns on the.Wire size. is probably 3.AWG. The transistor was marked 5.I could not cross to anything.I. would guess that a general purpose medium NPN power transistor like a 2.N3. 05. 3. or ECG2.For a PNP type, reverse the polarities of the.C1. Since it is very low power, no heat sink is used in this lamp.However. for other applications, one may be needed.Some experimentation with component values may improve performance for.When testing, use a variable power supply so you get a feel for how much.Component values are.C2, C3, R1, R2, the number of turns on each.T1, and the gain of your particular transistor.WARNING Output is high voltage and dangerous.Take appropriate.NOT connected. From Gary Perry perrygaryascom.I used this circuit based on this design to build an EPROM eraser, using the.G4. T5 germicidal tube.The tube seems to like 7.VAC in order to fire it up.I used a 2. N3. 05.VAC 1. 00m. A secondary transformer.After 2. 5 minutes constant usage, both transistor and transformer.A variable PSU was connected, and the circuit worked first time.The required. 7. 5 VAC output was achieved with only 5 VDC input.Back to Sams Schematic Collection Table of Contents.The circuit below is the type used in inexpensive fluorescent camping lanterns.In this particular model, an F6 T5 lamp was used.It will drive F4 T5 to.F1. 3 T5 tubes depending on input voltage.The power source can be a 4 to 9 V.A power supply depending on the size of your lamp or a suitable battery.This design was reverse engineered from a random commercial unit of.T1. o. C2. S1 D 2.T. Start 2. F. 6.V. R2 O 2. T. 2. FL1.T5 lamp. C1 FS 7.T. F 3. 2. V. S2 O Output.Off C D Drive. Q1 FS Feedbackstarting.E 2. SC1. 82. 6 D2.N4. 00. 7. R1 D1.N4. 14. 8. The approximate measured operating parameters are shown in the chart below.The two values of input current are for startingrunning starting is with.Start button, S1, depressed.Lamp type F4 T5 F6 T5 F1.T5. Vin Iin Iin Iin.V. 9. 6 A. V 1. 1.A 1. A. 5 V 1. A 1.A. V 1. 41. A 1. 6.A. V 1. A. 8 V 1.A. 9 V 2. A. 1. 0 V 2.A. Construction can take any convenient form perf board, minibox, etc.Make sure the output connections are well insulated.T1 is assembled on a square nylon bobbin, 38 cubed.Wind the 2. 50. T O.Output first, insulate with mylar tape, 2.T D Drive next, and 7.T FS. FeedbackStarting last.Observe directions of windings as indicated by.The number of turns for the O winding was estimated based.The core is just a straight piece of ferrite 14 x 14 x 1 38 It is.Any general purpose NPN power transistor with Vceo 8.V, Ic 2 A, and. Hfe 1.For a PNP type, reverse the polarities of the power.C1, D1, and D2. Use a good heat sink for continuous operation at higher power levels 6 V.The type used 2. SC1.I fried. SV2. P0.Pushbutton switches are used to control operation.S1 Start provides.FeedbackStarting winding of.T1 until the tube arc is established.
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