Zakaj varovalka avtomobilskega ojačevalnika kar naprej pregoreva?
Če vam varovalka v avtomobilskem ojačevalniku kar naprej pregoreva, je to lahko frustrirajuće in drago.
Morda ne veste, kaj povzroča pregorevanje varovalke, zaradi česar jo je težko popraviti. Kakšni so torej razlogi za pregorevanje varovalk v avtomobilskem ojačevalniku in kaj je mogoče storiti, da to preprečimo? Ugotovimo.
Varovalke avtomobilskega ojačevalnika nenehno pregorevajo zaradi enega od treh razlogov:
1. Ojačevalnik črpa preveč energije iz baterije.
2. Nekje v ojačevalniku je kratek stik
3. Ojačevalnik se pregreva.
Namig: Za vse vgrajene varovalke uporabite namensko škatlo z varovalkami. To bo zaščitilo varovalko pred poškodbami in tudi povezavo pred vlago ali prahom.
Obstaja veliko vrst in različic nosilcev varovalk, vendar uporabljam InstallGear za rezalne varovalke in našli Želo biti najboljši za steklene varovalke (povezave do Amazona).
V tej objavi bom raziskal nekaj pogostih vzrokov za pregorele varovalke avtomobilskega ojačevalnika in dal nasvete, kako preprečiti, da bi se to v prihodnje zgodilo.
Zakaj avtomobilski ojačevalniki pregorevajo varovalke?
V večini primerov bo ojačevalnik pregorel varovalke zaradi notranjih poškodb, ki jih povzroči način namestitve, kar pomeni, da komponente potegnejo preveč toka iz napajalnika.
Ko se to zgodi, je edini način za zaščito ojačevalnika, da namestite inline, ki bo pihal v pogojih preobremenitve.
Velikokrat ojačevalnik ne bo pokazal znakov nepravilne namestitve, dokler ne bo prepozno, pregorevanje varovalk pa pomeni, da je bila storjena škoda. Pogost spregled med ožičenjem je slaba ozemljitev ojačevalnika.
Če ozemljitvena žica ni pravilno priključena na čisto, nebarvano kovinsko površino, lahko povzroči najrazličnejše težave, vključno s pregorevanjem varovalk.
Drugi razlog, da ojačevalnik pregori varovalke, je, če sta napajalni in ozemljitveni vodnik preblizu skupaj.
Ko sta blizu skupaj, lahko ustvarita tako imenovano »ozemljitveno zanko«, ki bo povzročila pregrevanje ojačevalnika in sčasoma pregorelo varovalko.
To je še posebej opazno, če so napajalne žice pretanke (prevelike AWG) s slabim oklopom.
Osnovno pravilo je, da sta napajalni in ozemljitveni vodnik čim bolj oddaljeni.
Kako preveriti, ali je varovalka vašega avtomobilskega ojačevalnika pregorela?
Najpreprostejši način, da preverite, ali je pregorela varovalka avtomobilskega ojačevalnika, je, da vizualno preverite, ali je tanka žica v notranjosti stopljena. Če je, je to dober znak, da je varovalka pregorela in jo je treba zamenjati.
Če želite vizualno preveriti varovalko, morate:
1. odstranite varovalko iz držala varovalke
2. pridržite do luči
3. preverite, ali je žica v notranjosti stopljena
Preden odprete držalo varovalke, preverite, ali ni prevroče, ker je to lahko znak večje težave.
Če ne vidite, da je varovalka morda pregorela, vendar še vedno mislite, da bi to lahko povzročilo težavo, lahko uporabite multimeter (povezava do Amazona), da preverite, ali deluje pravilno. Če želite to narediti:
1. odklopite ojačevalnik iz napajanja
2. nastavite multimeter v način kontinuitete
3. priključite en vodnik multimetra na en konec varovalke
4. priključite drugi vodnik multimetra na drugi konec varovalke
Če multimeter zapiska, to pomeni, da varovalka ni pregorela. Če pa ni kontinuitete, je varovalka najverjetneje pregorela in jo je treba zamenjati.
Kaj storiti, če vašemu avtomobilskemu ojačevalniku pregorevajo varovalke?
Če v vašem ojačevalniku pregorevajo varovalke, morate najprej preveriti namestitev.
Prepričajte se, da so vse žice pravilno povezane in da nobena ohlapna povezava ali sumljiva mesta ne povzročajo kratkega stika.
Nato preverite napajalne in ozemljitvene žice, da vidite, ali so preblizu. Če so, jih poskusite premakniti narazen. Če težave ne odpravite, boste morda morali zamenjati žice z večjimi.
Nazadnje preverite samo varovalko. Če je pregorel, ga zamenjajte z novim z enako oceno.
Ko opazite, da ojačevalnik še vedno pregoreva varovalke, je morda nekaj narobe s samim ojačevalnikom. V tem primeru je najbolje, da ga odnesete k strokovnjaku na diagnozo in popravilo.
Če vaš ojačevalnik črpa preveč iz baterije, je to verjetno zato, ker zvočniki zahtevajo preveč energije, pogosto zaradi nižje impedance ojačevalnika.
To se lahko zgodi, če uporabljate preveč zvočnikov na kanal ali če se vaši zvočniki ne ujemajo (tj. eden ima nazivno moč 100 vatov, drugi pa samo 50 vatov in je povezan vzporedno).
Če je nekje v vašem ojačevalniku kratek stik, je to verjetno vzrok za pregorevanje varovalke. Če želite najti in popraviti kratek stik, boste morali odpreti ojačevalnik in raziskati notranjost.
Preverjanje notranje elektronike v ojačevalniku, vseh tranzistorjev in povezav je lahko težavno, zato je najbolje, da ga odnesete k strokovnjaku, če niste prepričani v svoje sposobnosti.
Če se vaš ojačevalnik pregreva, je to običajno zato, ker nima dovolj prezračevanja.
Prepričajte se, da je ojačevalnik nameščen na dobro prezračenem mestu in da nič ne ovira pretoka zraka okoli njega. If the problem persists, you may need an amplifier with larger cooling fans.
How to Prevent Car Amplifier From Blowing Fuses?
There are a few things you can do to prevent your amplifier from blowing fuses:
1. Make sure the power and ground wires are of the correct size and properly connected.
2. Keep the power and ground wires as far apart as possible.
3. Use high-quality, thicker gauge wire for the power and ground connections.
4. Make sure the amplifier is adequately ventilated.
#5. Use a higher quality fuse placed in the temperature and water-resistant fuse box.
If you follow these tips, you’ll be much less likely to blow a fuse in your car amplifier. However, if it does happen, now you know how to check and replace the fuse.
The Symptoms of a Blown Car Amp Fuse.
If your car amplifier fuse has blown, you will notice a loss of the music as the amplifier stops working. In most cases, the sound is completely cut out, but if you have more than one amplifier, some speakers may still work.
If you suspect that the fuse has blown, the first thing you should do is check it with a multimeter. If there is no continuity, then the fuse needs to be replaced.
Once you’ve replaced the fuse, if the amplifier still isn’t working correctly, there may be another problem that needs to be taken care of.
In this case, you may need to reset the amplifier, but if it still does not work correctly after checking the installation, it’s best to take it to a professional for diagnosis and repair.
Can a Blown Car Amp Fuse Be Dangerous?
A blown car amp fuse is not dangerous, but this indicates something wrong is happening in the car audio installation.
If the fuse blows repeatedly, there may be a short circuit somewhere in the system, and this can be dangerous as it may cause a fire.
It is crucial to find and fix the problem as soon as possible to avoid any further damage. If you’re not confident in your abilities, you should take it to a professional for a detailed investigation.
How to Replace a Blown Car Amp Fuse?
If your car amplifier fuse has blown, you will need to replace it with a new one. To do this, you’ll need a few tools:
– A screwdriver
– A multimeter
– A replacement fuse of the same rating as the original one
Št. 1. Use the screwdriver to remove the fuse from the holder. Then, use the multimeter (link to Amazon) to check the continuity between the two leads on the fuse. If there is no continuity, then the fuse needs to be replaced.
2. Take the replacement fuse and insert it into the fuse holder in the same orientation as the original fuse. Once it’s in place, screw the holder back on.
3. Now, turn on the car amplifier and test it to see if it’s working correctly. If not, there may be another problem that needs to be addressed.
After replacing the fuse, remember to put all rubber seals back in the fuse block so that moisture and dirt will not enter and cause problems.
The Best Way to Avoid Blowing Car Amp Fuse
The best way to avoid blowing a car amplifier fuse is by following these tips:
1. Make sure the power and ground wires are of the correct size and properly connected.
2. Keep the power and ground wires as far apart from each other as possible.
3. Use high-quality, thicker gauge wire for the power and ground connections.
4. Make sure the amplifier is adequately ventilated.
#5. Use a higher quality fuse placed in the temperature and water-resistant fuse box.
Common Mistakes That Can Cause a Car Amp Fuse to Blow
There are several installation mistakes that can cause an amplifier to blow fuses:
1. Installing the amplifier near sources of heat:
If your amp is installed near the engine or in a hot and humid environment, the excessive heat can damage the internal components and cause the fuse to blow.
2. Incorrectly wiring the amplifier:
If the amplifier is not wired correctly, it can cause a short circuit that will blow a fuse. Consult the manufacturer’s instructions or have a professional do the installation to avoid this mistake.
3. Not using an external capacitor:
A capacitor helps to stabilize the voltage coming from the car’s electrical system and prevents spikes that can damage the amplifier. If you don’t use a capacitor, your amplifier is more likely to blow its fuse.
4. Using a fuse of the wrong amperage:
If you use a fuse that is too small for your amplifier, it will blow more easily. Be sure to use the correct size fuse as specified by the manufacturer.
Zaključek
If your car amp fuse keeps blowing, it can be frustrating and costly. In addition, you may not know what’s causing the fuse to blow, making it difficult to fix.
However, by understanding some of the common reasons for blown car amp fuses, you can take steps to prevent this from happening in the future.