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That's the convention (crossed wires are only connected if there's a dot), but I find it easier to read when a "hump" is placed on crossing wires that don't connect. When looking at schematics in general, you'll find some do that and some don't. I always use the humps myself.As far as connecting your regulators, just hook them up in parallel to the power supply. For the OKR, you can use the enable/disable pin for the atomizer trigger. For battery powered stuff you want to use a switch on the main supply to absolutely conserve power when idle, but that's not a concern when using wall power.You'll want a good power supply that has low enough supply impedance to handle maximal loading from all 4 regulators. One rated for 15 or 20 Amps would be ideal.The OKR regulator has short circuit and overload protection built in. Buck converters usually do. A fuse is recommended for reverse polarity protection. Since the regulators will be hard wired to the supply, that's not an issue. Its generally a good idea to fuse any load for general safety. I would probably just use a 20A automotive blade fuse between the supply and all four regulators.BTW, there's no penalty in using a 12V supply as opposed to a lower supply for the regulators. DC-DC converters conserve power so there's no power hit in using a higher voltage over a lower voltage.
Is there a reason you added a 10k resistor for the Inhibit at Pin 1? I don't see that in the datasheet. See Schematic Also make sure the fire switch is a N/C switch.Using batteries as an input source, we do not need to add capacitors for input and output. However being you are using a power supply you may have to add them to filter ripple. This is from the datasheet:Recommended Input FilteringThe user must assure that the input source has low AC impedance to providedynamic stability and that the input supply has little or no inductive content,including long distributed wiring to a remote power supply. The converter willoperate with no additional external capacitance if these conditions are met.TECHNICAL NOTES For best performance, we recommend installing a low-ESR capacitorimmediately adjacent to the converter’s input terminals. The capacitor shouldbe a ceramic type such as the Murata GRM32 series or a polymer type. Initialsuggested capacitor values are 10 to 22 ?F, rated at twice the expected maximuminput voltage. Make sure that the input terminals do not go below theundervoltage shutdown voltage at all times. More input bulk capacitance maybe added in parallel (either electrolytic or tantalum) if needed.Recommended Output FilteringThe converter will achieve its rated output ripple and noise with no additionalexternal capacitor. However, the user may install more external output capacitanceto reduce the ripple even further or for improved dynamic response.Again, use low-ESR ceramic (Murata GRM32 series) or polymer capacitors.Initial values of 10 to 47 ?F may be tried, either single or multiple capacitors inparallel. Mount these close to the converter. Measure the output ripple underyour load conditions.Use only as much capacitance as required to achieve your ripple and noiseobjectives. Excessive capacitance can make step load recovery sluggish orpossibly introduce instability. Do not exceed the maximum rated output capacitancelisted in the specifi cations.
My only concern is that the phone connector jack chosen only has a Contact Rating of 1 A, 25 V DC.
looks like your photo link has disappeared DJ
Mod I need to hire you for my custom pc business. You do excellent work. I need to post some pics of a few rigs ice made but I'll haveta call the customers .... I had all the pics I'd ever made and several build videos on my digital camera setup but my wife left the garage open about 4mnths ago and my camera and my video editing rig and almost 21,000$ in inventory was stolen. They also stole my linbox that hosted my webserver and website. My homeowners insurance is still reviewing and figuring how much they are gonna pay me... My estimate to them was 37grand but I'll ' be lucky if I can cover my inventory loss. I've got near bout 100,000$ in inventory alone in my garage workshop and that doesn't include tools and machinery and my little paint booth... Thank God whoever robbed me didn't have more room in the getaway car but what sucks is they stole all video cards ... 4 of them were Titan X's I'd never opened them..Damn I have the worst off topic rambling condition...all I wanted to say was beautiful work modfather....liol