Tuesday, January 24, 2012

Free Nokia mobile phone code

Nokia code
 #pw+1234567890+2# Network Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols) .
    #pw+1234567890+3# Country Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).
    #pw+1234567890+4# SIM Card Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols) .
    *#147# This lets you know who called you last (Only vodofone).
    *#1471# Last call (Only vodofone) .
    *#21# This phone code allows you to check the number that "All Calls" are diverted to.
    *#2640# Displays phone security code in use .
    *#30# Lets you see the private number.
    *#43# Allows you to check the "Call Waiting" status of your cell phone.
    *#61# Allows you to check the number that "On No Reply" calls are diverted to .
    *#62# Allows you to check the number that "Divert If Unreachable (no service)" calls are diverted to .
    *#67# Allows you to check the number that "On Busy Calls" are diverted to
    *#67705646# Phone code that removes operator logo on 3310 & 3330
    *#73# Reset phone timers and game scores.
    *#746025625# Displays the SIM Clock status, if your phone supports this power saving feature "SIM Clock Stop Allowed", it means you will get the best standby time possible .
    *#7760# Manufactures code.
    *#7780# Restore factory settings.
    *#8110# Software version for the nokia 8110.
    *#92702689# Displays - 1.Serial Number, 2.Date Made, 3.Purchase Date, 4.Date of last repair (0000 for no repairs), 5.Transfer User Data. To exit this mode you need to switch your phone off then on again.
    *#94870345123456789# Deactivate the PWM-Mem.
    **21*number# Turn on "All Calls" diverting to the phone number entered.
    **61*number# Turn on "No Reply" diverting to the phone number entered .
    **67*number# Turn on "On Busy" diverting to the phone number entered .
    12345 This is the default security code .
    press and hold # Lets you switch between lines.

Author :

Most of the content taken from :

http://www.nokiainfo.net/info/nokia-secrets.php
*3370# This Nokia code activates Enhanced Full Rate Codec (EFR) - Your Nokia cell phone uses the best sound quality but talk time is reduced my approx. 5%
#3370# Deactivate Enhanced Full Rate Codec (EFR) .
*#4720# Activate Half Rate Codec - Your phone uses a lower quality sound but you should gain approx 30% more Talk Time.
*#4720# With this Nokia code you can deactivate the Half Rate Codec.
*#0000# Displays your phones software version, 1st Line : Software Version, 2nd Line : Software Release Date, 3rd Line : Compression Type .
*#9999# Phones software version if *#0000# does not work.
*#06# For checking the International Mobile Equipment Identity (IMEI Number) .
#pw+1234567890+1# Provider Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).

A cell phone is like a computer and has an operating system running behind the scenes. Use this guide to learn about Nokia Secret Cell phone codes and turn into a cell phone super user.  If you wish to unlock your Nokia Cell phone and get Nokia Unlock codes, check out our Unlock a Nokia Cell Phone article. Use the “*” button on your Nokia Cell phone to obtain the “p,w” and “+” symbols that will be used in the Cell phone Codes shown below.
Nokia Cell phone codes

1.  *3370# : This allows you to enhance the sound quality on your Nokia Cell phone. Press #3370# to deactivate Enhanced Sound Rate Code

2. *4720# : This is opposite to ESR codec activation above. Activates a lower quality sound on your Nokia Cell phone but you can gain almost 30% more in talk time. Use it if you are low on battery and need to last a business trip

3. *#0000# This displays the version on your Nokia Cell phone.*#9999# does the same

4. *#06# This code lets you check the IMEI (International Mobile Equipment Identity) number of your Nokia Cell phone

5. #pw+1234567890+4# This lets you find out about the SIM code lock or unlock status on your Nokia Cell phone

6. *#21# In case you activated the Call divert feature, you can use this code to check that number

7. *#2640# This displays the security code currently in use on your Nokia Cell phone.

8. *#30# In case you received a call from a private number, this Nokia Secret cell phone code lets you see that private number

9. *#62# In case you are roaming on in a place where your cell phone providers signals are hard to reach you can activate a “Divert If Unreachable (no service)” calls.

10. *#67705646# Remove that ugly operator logo on your Nokia Cell phones 3310 & 3330.

11. *#92702689# This lets you see the serial number, the date your Nokia cell phone was made, a purchase date if in the system and the date of last repair.

12. 12345 This is the default security code on most Nokia Cell phones

Sunday, January 22, 2012

10 White LED Night Lamp Circuit Diagram for 230V


This is the LED night lamp circuit diagram and it operates by using 230v mains current. We used white LEDs for D6 to D15 and D5 Zenar Diode we used as a voltage limiter.  The circuit uses 30mA current and this night lamp good solution against to the higher power consumption lamps. You can use this night lamp to your room and that will be gives good brightness.
Components:
C1 – 0.47uf/250v (474) Polyester
C2 – 100uf/50v
R1 – 270K
R2 – 4.7
D1 – D4 – 1N4007
D5 – 1N4754
D6 – D15 – 10 White LEDs
Build this circuit on good quality PCB.
Components:
C1 – 0.47uf/250v (474) Polyester
C2 – 100uf/50v
R1 – 270K
R2 – 4.7
D1 – D4 – 1N4007
D5 – 1N4754
D6 – D15 – 10 White LEDs
Build this circuit on good quality PCB
.