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Posts tagged Active circuit diagram

HF VHF UHF tv antenna boster Active

HF VHF UHF tv antenna boster Active circuit diagram using 2SC2570, MFE201

Portable guitar headphone circuit

Portable guitar headphone circuit I built a portable headphone amplifier for testing purposes Headphone amp circuit using : R1 = 10K R2 = 100K R3 = 68K R4 = 1.5K R5 = 3.3K R6 = 330R R7 = 4K7 R8 = 2.2R C1 = 1µF-63V C2 = 100µF-25V C3 = 470µF-25V Q1 =  BC239C Q2 […]

400 watts full power transistor audio amplifier circuit

400 watts full power transistor audio amplifier circuit 400 watts power transistor audio amplifier circuit using TR 7199P, 6L6GC, 6SN7 Parts: R1 10 kΩ         C1 0.22 µF      Q1 7199 P R2 100 kΩ       C2 0.2 µF        Q2 6L6GC R3 220 kΩ       C3 0.5 µF        Q3 6L6GC R4 820 kΩ […]

Circuit diagram LM1881 video sync for tv and lcd monitor separator, a 74HC4066 as a simple analog switch

The chips include an ATmega88 as the main controller, an AD9280 ADC, an LM6134 high-speed quad op-amp, an LM1881 video sync separator, a 74HC4066 as a simple analog switch, and an RS-232-level converter. LM1881 Video sync separator extracts timing information including composite and vertical sync, burst/back porch timing, and odd/even field information from standard negative […]

On Off Touch Switch Circuit with Photo Transistor

On Off Touch Switch Circuit with Photo Transistor using 40106B

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