Friday, December 27, 2013
Build a 5v And 12V Ac Powered Switching Supply Circuit Diagram
How to Build a 5v And 12V Ac Powered Switching Supply Circuit Diagram? This supply uses an SGS-Thomson UC3842 IC in an off-line flyback regulator, providing + 5 V at 4 A and ± 12 V at 300 mA. This enables a small high-frequency (50 kHz) transformer, to handle large amounts of power that are normally handled by a 60-Hz transformer.
Q1 is a 5-A 500-V MOSFET, and the diodes are fast-recovery types. T1 has a 45-turn primary winding of #26 wire. The 12-V windings are each 9 turns of #30 wire, bifilar wound. The 5-V winding is 4 turns of four bifilar #26 wires. The control (feedback) winding is two bifilar, parallel 10-turn, #30 windings. The core is Ferroxcube EC35-3C8 with a 3/s` center leg.
5v And 12V Ac Powered Switching Supply Circuit Diagram
Thursday, December 26, 2013
Simple Micro volt probe Circuit Diagram
The current tracer helps locate a defective IC that is loading down the power supply. The tracer amplifies the small voltage drop caused by current flow along a fraction of an inch of PC wiring and drives an ordinary microammeter. Needle-point test probes are used to contatt the edge of a PC trace and to follow the current to determine which branch the current takes.
One-half of a dual 741 op amp forms a dc amplifier with ac feedback to prevent oscillations and hum-pickup problems.It drives a 50-to-100 µ meter. The other op amp provides a center tap for the 9 V battery supply and zero adjustment with R4. Two diodes protect the meter. Resistor Rl eliminates the necessity for shorting the probes when the meter is zeroed. The value of 1 ohm is large when compared with the resistance of the meter leads plus the bridged portion of PC wiring.
Micro-volt probe Circuit Diagram
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Wednesday, December 25, 2013
There is no need to get the special training to operate phone jammer
There is no need to get the special training to operate phone jammer .
"Fixed position" be changed to the upper left corner "point X coordinate into a 63" fixed point Y coordinate into a 156 "maximum width" be changed to 102, the frame color, "within the box color, Background color changed to white FFFFFF text color changed to red FF00FF. Set show the effect will be much better. TXT, text is one of the most commonly used text format in the computer, if you want to read and edit the TXT text install YEdit software on the phone. It has a very strong TXT text reading and editing features. After installation, conduct basic settings: Options - Tools - Settings "will open the file encoding to save the file encoding is set for the GB2312, word wrap is set to open. The technical personnel is doing every effort to make phone jammer more effective.
Can now press the "Options - File - New open save the TXT text to open the text, press the" Options - Edit the text to paste Select Find the use of the office suite Quickoffice. 60 version of the Quickoffice the Premier Series is the only one who can edit Microsoft Office documents smartcell phone software on Symbian smartcell phone platform. computer-formatted e-mail attachments directly on the cell phone view and edit additional conversion without the need to do on the computer, and special editorial protection mechanism can keep the original contents of the file. Q: How do I enter Quickword edit mode? To enter edit mode, select "Options - Edit mode so you can directly edit the Quickword document. If there are too many sets of phone jammer , especially after many buildings in the prison implement shielding, it is harder to switch on or off centrally or uniformly.
The Quickword an error when I try to open a Microsoft Word document "doc" file, "do not support the contents of the file, what does this mean? This file have any questions? This situation mostly because trying to open doc file, in fact, RTF (Rich Text Format) files. You can open this file on the computer using Word and then save as DOC format, so that you can successfully open. Note that: similar Wordperfect this program to create the *. Doc file, the actual Rich Text Format (RTF) file. How do I enter punctuation marks? Use the cell phone keypad to enter punctuation, press the "*" key, and then select from the list. Host of phone jammer is installed on the top inside the case.The open meeting of phone jammer review was successfully held in the meeting room
How do I enter a carriage return line feed in the Quickword? You can find the carriage return symbols in the punctuation table. I want to how to highlight text in the Quickword? To highlight text, you must first enter the edit mode, then press the T-shaped key, and drag the joystick, you can highlight text. The Quickword in the clipboard text word limit? There is no limit (depending on the size of the cell phone memory). Menu, select "scan range" mean? This means that you can specify in the cell phone scanned files location.
Continue reading...
"Fixed position" be changed to the upper left corner "point X coordinate into a 63" fixed point Y coordinate into a 156 "maximum width" be changed to 102, the frame color, "within the box color, Background color changed to white FFFFFF text color changed to red FF00FF. Set show the effect will be much better. TXT, text is one of the most commonly used text format in the computer, if you want to read and edit the TXT text install YEdit software on the phone. It has a very strong TXT text reading and editing features. After installation, conduct basic settings: Options - Tools - Settings "will open the file encoding to save the file encoding is set for the GB2312, word wrap is set to open. The technical personnel is doing every effort to make phone jammer more effective.
Can now press the "Options - File - New open save the TXT text to open the text, press the" Options - Edit the text to paste Select Find the use of the office suite Quickoffice. 60 version of the Quickoffice the Premier Series is the only one who can edit Microsoft Office documents smartcell phone software on Symbian smartcell phone platform. computer-formatted e-mail attachments directly on the cell phone view and edit additional conversion without the need to do on the computer, and special editorial protection mechanism can keep the original contents of the file. Q: How do I enter Quickword edit mode? To enter edit mode, select "Options - Edit mode so you can directly edit the Quickword document. If there are too many sets of phone jammer , especially after many buildings in the prison implement shielding, it is harder to switch on or off centrally or uniformly.
The Quickword an error when I try to open a Microsoft Word document "doc" file, "do not support the contents of the file, what does this mean? This file have any questions? This situation mostly because trying to open doc file, in fact, RTF (Rich Text Format) files. You can open this file on the computer using Word and then save as DOC format, so that you can successfully open. Note that: similar Wordperfect this program to create the *. Doc file, the actual Rich Text Format (RTF) file. How do I enter punctuation marks? Use the cell phone keypad to enter punctuation, press the "*" key, and then select from the list. Host of phone jammer is installed on the top inside the case.The open meeting of phone jammer review was successfully held in the meeting room
How do I enter a carriage return line feed in the Quickword? You can find the carriage return symbols in the punctuation table. I want to how to highlight text in the Quickword? To highlight text, you must first enter the edit mode, then press the T-shaped key, and drag the joystick, you can highlight text. The Quickword in the clipboard text word limit? There is no limit (depending on the size of the cell phone memory). Menu, select "scan range" mean? This means that you can specify in the cell phone scanned files location.
Tuesday, December 24, 2013
Build a High voltage Bucking Regulator Circuit Diagram
This High voltage Bucking Regulator Circuit Diagram is basically tbe classic bucking regulator, except it uses a TMOS N-channel power FET for the chopper and creates its own supply for the gate control. Tht unique aspect of this circuit is how it generates a separate supply for the gate circuit, which must be greater than Vvv.
When power is applied, C2 charges, through D2, to +12 V. At this time, Q1 is off and the voltage at point A is just below zero. When the pulse-modulated signal is applied, the optoisolator transistors, Q2 and Q3, supply a signal to Q1 that turns it on. The voltage at point A then goes to Vvn. C2 back-biases D2, and the voltage at point B becomes 12 V above Vnn· After Q1 is turned on, current starts to flow through L1 into C1, increasing until Q1 turns off.
High voltage Bucking Regulator Circuit Diagram
The current still wants to flow through Ll, so the voltage at point A moves toward negative infinity, but is clamped by D1 to just below zero. Current flows less and less into C1, until Q1 turns on again. Q2 and Q3 drive Q1 `s gate between the voltages at point A and B, which is always a12 V swing, so Vcs max. is never exceeded. For proper operation, the 12-V supply has to be established before the pulse-width modulator signal is applied.
Monday, December 23, 2013
A network is rolled out according to a network plan
A network is rolled out according to a network plan. Services for arias are planned for and provided according to the potential
market. The network operator is a business with shareholders all demanding the best dividends on their investments. A BTS to provide these services to the end user will not be erected for one or
two farmers with the potential to generate R6000pm calls/smss made by themselves and their workers.The leather cases, covers, skins and
belt clips can help you to add a personal touch and amplify the charm of your mobile phone.
Antenna boosters can help you to enjoy the best network connectivity even if you are present in any "Dead Zone". I am sure that you will adore the benefits which are provided by this mobile phone
accessory. You can invest your funds and grab some antenna boosters which can match the personality of your handset. I am sure that you will fall in love with the tempting replicas of these
trimmings.
There are countless online websites which can offer you the accurate information about these mobile phone accessories. You can also grab some matching and obliging mobile phone accessories which
can help you to amplify the utility of your handset. The discount offers which are provided by these sites can help you to enjoy the facilities without any deep-rooted affect on your side-pockets.
I hope that you will enjoy the benefits of these trimmings. The HTC HD2 is the first Windows Mobile with a capacitive touchscreen and also with HTCs Sense UI. The homescreen comes with 13 tabs --
whose icons are depicted at the bottom -- in the form of a dock. These tabs can be customised to the extent that the features can be deactivated but new ones cannot be added. Under the home tab is
the calendar, clock and weather information. Sliding the homescreen up reveals the tabs to add 15 favourite features for direct access. The browser tabs let you add 10 bookmarks. The screen lock is
sliding at the top of the screen and also depicts the number of unnoticed events in the phone like missed calls, unread messages, etc. The main menu of the device is typical of Windows Mobile 6.5
with a honeycomb structure. Contacts can be integrated in a manner similar to previous HTC devices with Sense UI. They can also be integrated with Facebook. The device has a smart dialler, which
finds contacts by dialling the number or name of the contacts. Input options include phone keypad, compact QWERTY and full QWERTY.
Continue reading...
market. The network operator is a business with shareholders all demanding the best dividends on their investments. A BTS to provide these services to the end user will not be erected for one or
two farmers with the potential to generate R6000pm calls/smss made by themselves and their workers.The leather cases, covers, skins and
belt clips can help you to add a personal touch and amplify the charm of your mobile phone.
Antenna boosters can help you to enjoy the best network connectivity even if you are present in any "Dead Zone". I am sure that you will adore the benefits which are provided by this mobile phone
accessory. You can invest your funds and grab some antenna boosters which can match the personality of your handset. I am sure that you will fall in love with the tempting replicas of these
trimmings.
There are countless online websites which can offer you the accurate information about these mobile phone accessories. You can also grab some matching and obliging mobile phone accessories which
can help you to amplify the utility of your handset. The discount offers which are provided by these sites can help you to enjoy the facilities without any deep-rooted affect on your side-pockets.
I hope that you will enjoy the benefits of these trimmings. The HTC HD2 is the first Windows Mobile with a capacitive touchscreen and also with HTCs Sense UI. The homescreen comes with 13 tabs --
whose icons are depicted at the bottom -- in the form of a dock. These tabs can be customised to the extent that the features can be deactivated but new ones cannot be added. Under the home tab is
the calendar, clock and weather information. Sliding the homescreen up reveals the tabs to add 15 favourite features for direct access. The browser tabs let you add 10 bookmarks. The screen lock is
sliding at the top of the screen and also depicts the number of unnoticed events in the phone like missed calls, unread messages, etc. The main menu of the device is typical of Windows Mobile 6.5
with a honeycomb structure. Contacts can be integrated in a manner similar to previous HTC devices with Sense UI. They can also be integrated with Facebook. The device has a smart dialler, which
finds contacts by dialling the number or name of the contacts. Input options include phone keypad, compact QWERTY and full QWERTY.
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