Phone charger question

Started by Ivan Vegvary in sci.electronics.basics4 years ago 7 replies

Samsung Note 4 plus Google Nexus Tablet Have 3 wall chargers with USB port. Have only two cables that are USB micro. Always thought that...

Samsung Note 4 plus Google Nexus Tablet Have 3 wall chargers with USB port. Have only two cables that are USB micro. Always thought that one of my chargers is slow. NO! Turns out it is the cable. Battery monitor app (when it is on charge) suggests 2:15 (2h, 15m) to full charge with one cable and 5:21 (5h, 21m) with the other. The slow cable is a bit thinner. The above is t


Using mobile phone as an internet radio

Started by jim stone in sci.electronics.basics8 years ago 136 replies

Not being able to find a small internet radio to buy we liked, we got mobile phone with which we link with wi-fi to a modem router, and use it...

Not being able to find a small internet radio to buy we liked, we got mobile phone with which we link with wi-fi to a modem router, and use it as an internet radio. Keeping the phoned plugged into its charger all the time, we are using it to play *all-day* background classical music through an amplifier and speakers. Since the phone has no 'moving parts' unlike a computer, we are wonde...


Advice sought on why 6.8A USB charger melted USB cable today

Started by Danny D. in sci.electronics.basics5 years ago 3 replies

I was told to ask this question here... I would just like some advice since I melted a USB cable today and I realized I don't have the proper...

I was told to ask this question here... I would just like some advice since I melted a USB cable today and I realized I don't have the proper troubleshooting skills. I bought over a half-dozen "Hype Volt" 6.8Amp USB chargers for stuffing the Christmas stockings: https://i.imgur.com/Zavgm4B.jpg I kept one for myself, but, when I used it last night on an iPad and on an Android ph...


Charging NiMh batteries when not completely discharged

Started by AK in sci.electronics.basics1 year ago 26 replies

The aaa alkaline batteries went out on my tv remote. I decided to use my NiMh UBL aaa batteries. 1100 mAh. They are currently showing 1.31...

The aaa alkaline batteries went out on my tv remote. I decided to use my NiMh UBL aaa batteries. 1100 mAh. They are currently showing 1.31 volts. And they work ok in the remote as is. My charger is the manual type. It charges that type at 150 mA. I want them fully charged since they are 1.2 volts versus 1.50 for the alkaline. I would like to know how much longer to charge them...


high voltage capacitor charger - how to

Started by nescafe in sci.electronics.basics8 years ago 13 replies

Hi. I want to charge my capacitor bank with 72V-20A DC source. The idea is to store 1KW in this capacitor bank and then to use this power...

Hi. I want to charge my capacitor bank with 72V-20A DC source. The idea is to store 1KW in this capacitor bank and then to use this power to run some 450V electronics. DC source is constant so capacitors can be "recharged" all the time. The capacitor bank should be made of 450V / 400uF capacitors and normal power consumption of our electronics is around 800 - 900W. Does anyone has ...


Lead Acid Battery Charging

Started by Jessica Shaw in sci.electronics.basics8 years ago 31 replies

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Hi, Battery: http://www.digikey.com/product-search/en?lang=en&site=us&KeyWords=522-1032-nd&x=12&y=27 Charger: http://www.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&keywords=BA50012 0500003NK&x=12&y=11&cur=USD Circuit: http://img841.imageshack.us/img841/1848/batterycharger.jpg I am trying to power up my circuit using the above mentioned battery and the circui