Stores That Sell Fanfair Shoes

Costruirsi un alimentatore da campo

After a winter spent in the "hot" in an attic in the center of Tarquinia, we began to feel the need to find the best skies, especially after the experience of an evening in the country that has opened new horizons, with an extraordinarily black sky and a host of stars more, enough to make us see to the naked eye to see objects otherwise unthinkable.

Era da molti anni che non riuscivamo più a vedere degli oggetti “importanti” ad occhio, l’ultimo, la Galassia di Andromeda, dalla stessa mansarda  dove abitualmente fotografiamo, ma dalla quale ormai non si vede più nulla a causa del fortissimo inquinamento luminoso della città.

Occorre uscire! dobbiamo cambiare cieli! ma dove prendere l'energia elettrica per alimentare tutta la strumentazione?

La soluzione è semplice, almeno in apparenza:  un alimentatore field.

Simplicity is going to struggle but with the costs of these instruments, exaggerated, considering that are nothing more than the common car battery with an inverter attached!
will make it difficult to build one?

Let's try!

And here is "born" our bell 'power supply range, equipped with a battery of 100 Ah (60 Ah, those to be mounted against the "pre") and we will ensure a night and more power to realize our hopefully beautiful photos.

INGREDIENTS:

a 100Ah battery;

a plastic tool box (the biggest he could find);

1 Inverter da 300W o più a seconda dell’assorbimento delle attrezzature a 220v che dovete utilizzare;

2 prese accendisigari femmina a parete (non quelle volanti che danno molto disordine);

2 prese per corrente a Jack (le classiche che montano gli alimentatori);

1 Interruttore generale (I used a car ignition, which provides me with sufficient absorption not to burn anything);

a lamp;

a voltmeter (optional);

1 Ammeter (optional);

Cables 12v adequate absorption of various terminals and always adequate absorption of the current;

two terminals of the battery (positive and negative);

All purchased in electronics stores to a figure of just over € 150.00

PREPARATION

The first thing to do is drilling the tool box to house the various outlets: the switch, the warning light, voltmeter el'amperometro. Then make two holes to run cables to the Inverter Power Supply that it is better to stay outside the box.

This is necessary because inverters have a tendency to very hot, in fact often, as in our case, they are equipped with a cooling fan, but put it down 'inside the box could also affect the cooling efficiency thereof.

Once housed and taken all the various objects you can start with the links, which are very simple, but for which we must pay close attention to the polarity of the cable and camera mount.

It 'always good to check, though generally positive polarity is located in the center pin. There can therefore be taken directly from the positive polarity Tools and go to the middle pin of the various food outlets:

Al Instead, for what concerns the negative polarity taken directly from the negative terminal of the battery going to power the external wall sockets.

The connection of the voltmeter is very simple: the instrument panel with positive and negative to the negative terminal of battery.

The ammeter is connected in parallel to the cable which is to be measured on the output current and input, so we should choose a positive lead and is good to choose the cable that supplies power to the general framework, because in this way we could measure any current flowing out of the cable and then you can instantly monitor the "consumption" of the current settings on how long the battery will last. Whereas the calculated average consumption of all the equipment is about 10-15 Ah, we can calculate that our battery will last 8-10 hours, more than enough for our purpose.