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The Broadcast Hardware - Información del Blog
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Ultimos Posts 1. 02/12/2009 12:03 - Rf amplifier broadband 88-108 mhz 100w This RF amplifier for FM 88-108 MHz with no tune (broadband) needed to cover all the FM Band. This RF Power amplifie r is equiped with a bipolar transistor, the famous MRF317. As lots of FM amplifier application ,the power transistor is in a C class bias. All the impedance networks (Input-Output) of this RF amplifier have been determined by using the softwares: Mimp.EXE. This RF Am... 2. 02/12/2009 11:59 - 300w rf power amplifier for fm broadcast mrf6v2300n Here's a 300 watt singleended RF power amplifier for the FM broadcast band. This broadband FM power amplifier with simplicity and reliability is possible and compact to design and build at low cost. This RF power amplifier using the low cost OMP Freescale MRF6V2300N LDMOS transistor . It operates at Vdd = 50 VDC with an average drain efficiency in excess of 60% and a gain of 24 dB ... 3. 21/11/2009 02:21 - Harmonic absorbing filter for fm rf amplifier All RF amplifiers will "react" in some way when a low pass filter is attached. This reaction is mainly caused by reflected harmonics . All RF amplifers generate harmonics. When a low pass filter is attached to the amplifer most of the harmonic energy is reflected back to the transistor causing reduced efficency and output power . The transistor will also run hotter . The new LDMOS ... 4. 21/11/2009 02:19 - Fm power amplifier 88-108 mhz 600w blf574 BLF574 , 50V, push-pull transistor using NXP?s High Voltage 6th generation of LDMOS technology was introduced recently and makes this FM amplifier possible with a single transistor. This eliminates the need for combiners and associated losses. The BLF574 is the latest high performance technology from NXP. These new 50 volt LDMOS transistors are ideal for that 1KW amplifier project ... 5. 21/11/2009 02:11 - Pre-emphasis for fm transmitter This Pre-emphasis circui t was specially designed to be used with the FM Audio Transmitter . The circuit uses a dual opamp. The first opamp (IC1A) functions as a mixer and a buffer for the following correction network. The input sensitivity can be adjusted with the help of R3 (a lower value reduces the sensitivity). The 50 ?s correction for the pre-emphasis is carried out by C5 and... | Estadisticas Ver Codigo HTML Posicion del Blog en Nuestro Ranking Hits Semanales Hits Mensuales |