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Category: Electronic UpDownloads in English
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 (a) Pre-amplifiers (b) DC checkers (c) Gimmicks | | Description: | The two small circuits below are simple pre-amplifiers that can easily be assembled to be used with many of your intended audio projects . Any similar transistors can be used. The RF potentiometer adjust the negative feed back used to bias to Q1 while Q2 provides for a low impedance output. | | | Filesize: | 0 Bytes | | Added on: | 03-Apr-2004 | | Downloads: | 253 | | Category: | Electronic UpDownloads in English | | Homepage | Details |
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| 1.5-W STEREO AUDIO POWER AMPLIFIER | | Description: | High Power with PC Power Supply
– 1.5 W/Ch at 5 V
– 600 mW/Ch at 3 V
Ultra-Low Distortion
< 0.05% THD+N at 1.5 W and 4-W Load
Bridge-Tied Load (BTL) or Single Ended
(SE) Modes
Stereo Input MUX
Surface-Mount Power Package
24-Pin TSSOP PowerPADE
Shutdown Control . . . IDD < 10 mA | | | Filesize: | 0 Bytes | | Added on: | 16-May-2006 | | Downloads: | 427 | | Category: | Electronic UpDownloads in English | | Homepage | Details |
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| 20 meters CW QRP Transceiver | | Description: | Simple QRP CW Transceiver for the 20 meters
DATA:
RF Power: near 1 watt at 24 V.
Range of Feeding Voltage: 18- 24 Volts
Antenna impedance: 75 Ohms (can be any
desirable)
Quartz Stabilization Frequency.
Shift TX/RX: 400… 700 Hz.
VXO: 3… 6 kHz (depends on used quartz) | | | Filesize: | 0 Bytes | | Added on: | 21-Dec-2008 | | Downloads: | 392 | | Category: | Electronic UpDownloads in English | | Details |
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| ANTENNA FUNDAMENTALS | | Description: | In this chapter, the basic concept of an antenna is provided and its working is explained. Next, some critical performance parameters of antennas are discussed. Finally, some common types of antennas are introduced.
Antennas are metallic structures designed for radiating and receiving electromagnetic energy. An antenna acts as a transitional structure between the guiding device (e.g. waveguide, transmission line) and the free space. The official IEEE definition of an antenna as given by
Stutzman and Thiele [4] follows the concept:
That part of a transmitting or receiving system
that is designed to radiate or receive electromagnetic waves. | | | Filesize: | 0 Bytes | | Added on: | 21-Dec-2008 | | Downloads: | 473 | | Category: | Electronic UpDownloads in English | | Details |
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| BASIC Stamp Manual | | Description: | BASIC Stamp Manual Version 2.1 | | | Filesize: | 0 Bytes | | Added on: | 15-Feb-2005 | | Downloads: | 301 | | Category: | Electronic UpDownloads in English | | Details |
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