As explained elsewhere in this article set, after an equipment failure I decided to replace a combination inverter/charger unit with individual components that fill the same needs. The combination unit (the `Everything Box`) is an efficient way to save costs by combining certain electronic functions and sharing hardware, but if it should fail, all
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its functions are lost at once. Mine failed, and I decided I would like to avoid repeating that experience. Here is a block diagram of my solution: Most of this system can be put together from off-the-shelf components, in fact, everything except the line/inverter relay box, which it seems must be built from scratch. Here is a diagram of my line/inverter relay box, able to switch 30 amps and perhaps a bit overdesigned for the average small boat: The basic idea of this circuit is that activating the house-power inverter causes the relay to switch from shore power to inverter power. This box is wired into the boat`s breaker panel in such a way that only those loads that need inverter power are connected to it ” for example, a select number of outlets serving computers and video equipment, but not high-power equipment like microwaves (unless you buy a very large inverter and have a huge battery bank) and certainly not loads like the battery charger, which should always be connected to shore power. Don`t consider simplifying this circuit by eliminating the neutral wiring ” in modern house wiring, the neutral lines must always be switched along with the hot lines, among other reasons to allow GFI outlets to function as they should. In fact, the barrier strip with #6 hardware was a mistake, and if I were to do this over again, I would get a bigger size ” like #8 hardware ” because the existing terminals didn`t easily fit on this...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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