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Showing posts with the label MHz

10Mhz to 1 MHz Frequency Converter

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10Mhz to 1 MHz Frequency Converter Circuit Part ListIC1 7404 = 1 IC2 7490A = 1 R 1 K = 2 R 3.3 K = 1 C Trim Polymer 39 pF = 1 C Electrophoresis 4.7 uF 16V = 1 C Milar 47 nF 16 V = 1 C Milar 10 nF 16 V = 1 C Ceramic 68 pF 50 V = 1 

RF Fm 88 108 MHz 20W amplifier Circuit Diagram

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This Fm rf power amplifier has 2 transistors from Philips : BLV 10 and BLW 87. The 2 rf transistors work in class C and this fm amplifier has a total gain of 21dB ( 100 X ) and efficiency 55 – 65%. One low pass filter with 9 components ensures 60dB rejection on the second harmonic. There is no need for tune-up to cover the whole 88 – 108 MHz FM frequencies.  RF Fm 88 108 MHz 20W amplifier Circuit Diagram

Eridani – 50 MHz ARM Cortex M3 with USB

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Eridani is a LM3S3651 based general purpose development board with USB Host/Device/OTG. You can buy one here. This documentation should help you use it effectively. All of the details on how to setup toolchains for this board are filed under getting started. [ ]