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7 DOT LEVEL METER DRIVER Audio circuit using KA2288 7 DOT LEVEL METER DRIVER circuit using KA2288 The KA2288 is a monolithic integrated circuit consisting of 7-dot LED level meter drives.  KA2288 employs a low noise comparator which provides 10dB lower noise in the LW, MW band than the previously mentioned LED drivers. FEATURES LED […]


5 DOT LED LINEAR LEVEL METER DRIVER circuit using KA2284 5 DOT LED LINEAR LEVEL METER DRIVER circuit using KA2284 The KA2284 are a monolithic integrated circuit disigned for 5-dot LED level meter drives with a built-in rectifying a amplifier, it is suitable for AC/DC level meters such as VU meters or signal meters. FEATURES […]

Radio remote control circuits

Radio remote control circuits The easy way to detect the tv remote is damaged or not Remote Control Breakers Circuit diagram remote control wireless Circuit Using 555 Remote Control Transmitter circuit TV remote control blocker Remote Control Circuit Breaker using 2SA104, 2SB187, 2SB22 IR remote control light, using relay Infrared Spectroscopy Radio Remote Control using […]

Electronic Component Schematic Symbols

Electronic Component Schematic Symbols

Circuit Diagram Radio Stereo Coder Multplexer Part 1

Circuit Diagram Stereo Coder Multplexer Multiplexer consists of 4 TTL ICs and transistors. A 7600-kHz crystal oscillator built with the 3-NAND The IC’s 2 and 3 of type SN7490. Now think of 76 kHz signal as a divider of two Werken. Either 38 kHz signal and the output Q Qnot decreased. Transistors T1 and T2 […]

6v – 12v simple inverter circuit diagram

6v – 12v simple inverter circuit diagram using NE555 and TIP41, 42, 2N3904

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