12v Solar Battery Charger Circuit >>

 In the field of physics star technology is extremely well-liked currently a days  and growing day by day. star gadgets additionally|also are|are} taking attention of peoples and uses of alternative energy is happening not solely in out facet of cities and area wherever no wattage is on the market however also in cities
Here could be a star device schematic which might charge twelve potential unit SLA batteries. This solar panel charger circuit has car stop perform therefore it\'ll mechanically stop charging once the battery become full charge.Electronics Circuit Application

 

USB charger circuit >>

This is a conveyable battery steam-powered USB charger circuit. This circuit is ready to charge your PDAs, Ipods, Mp3 players and any device that insert to a laptop USB to charge. If you work this circuit in an exceedingly little box with a 9V battery then it'll become a conveyable emergency USB charger.
The schematic is therefore easy victimisation solely few parts therefore you'll be able to build this circuit in some minutes if all elements out there with you. The circuit is victimisation low dropout regulator IC LM7805 that is well out there within the market and it's additionally rock bottom. The circuit takes voltage from 9V battery and step down the voltage in to a DC 5V output 

 

Electronics Circuit Application

 

T-Mobile myTouch 3G Master reset using hardware >>

Before performing a master reset using hardware buttons, first attempt:

• Soft reset, see Soft reset - T-Mobile myTouch 3G / 3.5 mm / LE.
• Clear system cache to reset, see Clear system cache to reset the phone - T-Mobile G1 / myTouch 3G / 3.5 mm Jack / LE.
• Master reset, see Master reset - T-Mobile myTouch 3G.

If the phone is locked, frozen, or unresponsive, you can perform a master reset using the hardware keys instead of the menu. A master reset restores the original factory settings and may erase all downloaded content, including ringtones, images, programs, and contacts stored in the internal memory. It does not erase data stored on the SIM card or memory card (if available).

To perform a master reset using hardware keys, follow these steps:

1. Back up your data. See: Prepare for a master reset and back up data on Android
2. Turn off the device.
   • Note: If the device is unresponsive and does not turn off, remove and then reinsert the battery.
3. Press and hold the Home key.
4. While already holding Home, press and hold the Back key.
   
   
5. While holding both keys, press the Power key and release it. Do not hold it.
6. Release the keys when you see Androids on skateboards.
   Note: If you do not see this, you have the incorrect software version for this proceedure. See: Master reset using hardware buttons - T-Mobile myTouch 3G with Android 1.6.
7. If you see a CLEARSTORAGE option, select it.
   
   
8. Press the Trackball (action) to select YES.
9. When the device says Send, press the green Send key.
   
   
10. Wait as the device turns off and back on.
11. If unable to access the internet after performing the reset, see Verify the Access Point Name (APN) and internet data connection - T-Mobile myTouch 3G / myTouch 3G Slide / myTouch 4G.

Important: This procedure is for the newest software version. To check the software version, see: Verify software / flex version - T-Mobile myTouch 3G / 3.5 mm / LE. For phones with old Android 1.6 software that have NOT been updated to Android 2.2 (Froyo), see: Master reset using hardware buttons - T-Mobile myTouch 3G with Android 1.6.

Electronics Circuit Application 

Transformerless Power Supply circuits >>

Many times we want a simple power supply to operate our low power electronics or electronic circuits. Most of the power supplies use transformers but there is also some tricks to get voltage of your needs from transformerless power supplies. Transformerless power supplies are very

important and works well on the places where you have short place and low mA requirements. The circuit mentioned here is a simple and verastile power supply circuit which is capable of delivering any voltage from 3 to 12 volts by selecting suitable parts values you can obtain voltage of your needs.
Here are some details of part values you can change to get the required voltages.

For  3V Use  R2 = 15K, D2 = 3V & C1 = 220µF
For  6V Use  R2 = 12K, D2 = 6.2V & C1 = 220µF
For  9V Use  R2 = 10K, D2 = 9V & C1 =  220µF
For 12V Use R2 =  10K, D2 = 12V & C1 =  470µF

Note: Many of its points are at AC mains voltage. It could give you lethal shock if you are not careful. If you don't know much about working with AC line voltages do not attempt to construct this circuit. Electronics Circuit Application

Lead Acid 12V Battery Charger circuits >>

There are a cardinal of credibility we allegation to awning about the affliction and use of Sealed Lead Acid batteries.

Firstly, these batteries allegation be charged, absolved and stored actual carefully.

We commonly anticipate batteries can be stored for months (if not years) and they will be accessible for actual use.

This is not the case with SLA batteries.

If you abundance a NEW, abounding answerable SLA array for 6 months or more, you will acquisition it may be absolutely discharged.

You may additionally acquisition you cannot allegation it!! It may be worthless.

That's how aerial SLA batteries are.

They allegation be answerable on a approved base to anticipate them absolution to a actual low voltage level.

If the terminal voltage of a SLA array is accustomed to go beneath 8v, a action alleged SULPHATION starts to awning the apparent of the plates and prevents the array actuality re-charged. The centralized attrition of the array increases and it becomes useless.

Parts List.

2 - 1R8 0.5watt resistors

1 - 150R 0.25 watt resistor

1 - 180R

1 - 560R

1 - 1k5

3 - 2k2

1 - 3k3

1 - 4k7

1 - 8k2

1 - 1k mini trim pot

1 - 1n ceramic

2 - 47u 25v electrolytics

1 - 5mm red LED

4 - 1N4148 arresting diodes

1 - 10v 0.25watt zener

1 - BC 547 transistor

2 - BC557 transistors

1 - MCR100-6 SCR

1 - 1m red lead

1 - 1m atramentous lead

2 - alligator clips

1 - 2m actual accomplished solder

1 - SLA Array Charger PCB

Also required:

1 - 12v AC agent (500mA AC)

1 - ability lead

Huawei CDMA PHONES circuits board

Huawei CDMA PHONES circuits board Phone Parts and Components

Electronics Circuit Application

STK465 Stereo Amplifier circuit >>

STK465 Stereo Power Amplifier circuit

STK465 - 30 watt Stereo Power Amplifier

Source: http://sharingmanual.blogspot.com/2012/08/stk465-30-watt-stereo-power-amplifier.html

Completed STK465 is an amplifier of acoustic frequencies that offers qualitative output, using minimal exterior elements. Substantially he is one of big completed force. When it functions with tendency 56V then the tendency will be ± 28V as for the ground. With this recommended tendency of catering, the attributed force is 30 WRMS in charge 8 Ohm.

The STK465 Amplifier circuit is stereo and has two channels of amplifier in a nutshell. It is a formal designing that develops positively all the particularities completing. The amplifier can be supplied from a line of double polarity. Still it can function under a wide region of tendencies (±10V as ±28V). The requirements of current depend from the force of expense and it can they begin from 120mA up to 1A. It is very important the catering to be sufficiently unharnessing, so that is avoided imports of annoying noises.Electronics Circuit Application