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A capacitor C1 and resistors R1-R3 form a negative sequence voltage filtration device. The resistors and capacitors must meet the following requirements: R1, R2, R3 = 5.5/C1 (KN). The relationship between the resistance and capacitance values is arbitrary. Capacitor...
This FM RF amplifier utilizes two transistors from Philips: the BLV 10 and the BLW 87. The two RF transistors are configured in a chic C arrangement, providing an overall gain of 21 dB (100 times) with an efficiency...
The Max650 switching regulator generates a regulated 5 V output from large negative voltages, such as the -48 V commonly found on telephone lines. This power supply requires several external components, including a transformer, and is capable of delivering...
the entire circuit is comprised of integrated circuits. This makes for some easy organization when it goes to the circuit board for soldering. In addition, I used only 3 of the pins on the 3rd nixie tube for the...
This circuit allows any standard household bulb to shimmer or blink. It is compatible with incandescent lights up to 200 W and operates on standard 120 Vac. The circuit employs a silicon-controlled rectifier (SCR) to create the shimmering effect....
The circuit functions as a frequency modulation (FM) transmitter that operates within the 76 to 90 MHz FM radio band, commonly referred to as a wireless microphone. It receives signals through an FM radio receiver. The circuit is capable...
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