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Hello Group , I build scale r/c boats and I want to build my own 12 motor speed controller to hook up to my receiver which requires a 3 wire hook up at the receiver , wire colors = red,black,white . I

Hello, I'm new to the group and am currently working on building an analog synthesizer. I have some good circuit designs and decent plans for execution. My next step is PCB design. I have been using

I need help again, I have a Hewlett Packard 722 C printer and there is a diode molded into the cord that goes from the power supply to the printer. The diode is bad and can't be replaced because it is

A half-mile isn't much, but being the fascist organization that it is, the FCC won't allow it. Without applying for a license I believe you're limited to 100 mW, which is about good to the end of your

Thank you. This was the help I was looking for. This is how my power supply circuit looks so far... A 25V/2A transformer is rectified through four 1N5404s and then passes over a 2200uF/35V cap. These

The only reason for the closed loop mode was the band-width that you get(increased...)and the impedence... If you wish you can choose the non-inverting mode or many other configurations depending upon

Hi , Before you think what frequencies to use for the A/V connection try to get the list of what frequencies are available for free... In any case a VHF would do fine and if you have a lot of

I've been looking and looking, but i can't seem to find the circuit for a laser tag "Sniper Rifle". I want to be able to have a one-shot,reload rifle, capable of shooting at least 200 meters. I've

Mike, There are advantages and disadvantages of both approaches, out of personal preference and a costing perspective, based on your circuit description, I would use one large cap (i.e. around 6600uF)

I'd go for one each, they're not exactly expensive, unless you're going for 6800uF at 63V or upwards... chirsc

Maybe I misspoke in my posting...I wasn't asking whether or not to use a large cap, but whether I needed two of them (one for each subcircuit). I have positive and ground rails and planned on having a

It won't kill it if you put a resistor in series with it to take up the slack. But the resistor should be chosen so that its power rating is high enough and so that it limits the current through the

: What will your fan and other things be powered by? For example, are they powered by AC or DC? If they are powered by AC, you will need to provide rectification for the diode. If the fan and other

dear dot-dot no it is not neccessary to run a capacitor on each of your "sub circuits", in fact, if you take it to the other extreme, you don't really need to run a capacitor at all! The supply will

I'm new to electonics and one of my first projects is a benchtop power supply. It's going to have variable and +5V outputs. I've seen many circuit designs for multiple-output power supplies and nearly

I forgot to explain that. I have no orange in my rear lights.The red obviously lights up when the light are on, but then the red gets brighter when the brakes or blinker is applied. And I was having a

Hi. I have a project that is going to use wireless audio/video. Does anyone know what frequency is the best (range, picture and sound quality) for A/V transmission? I know there's 2.4GHz, around 900

probably due to them being very bright leds. i dunno. find similar leds and price them out? -- /| |\ |/| / | | / |/

G'day Jason, Just a few thoughts on your LED lighting queries: Assuming that you are ok with the rest of the wiring details (i.e. actually getting the LED's into the correct positions, parallel &

I'd think you could just use a DPST (Double Pole Single Throw) switch. It's like a regular switch, but with four connections instead of two(SPST). SPST switches only control one circuit, while DPST