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The circuit in Figure 1 is an RS-232/485 converter that uses the transmitted signal itself to control the flow. The circuit uses MAX232 and MAX483 interface circuits, IC1 and IC2 from Maxim Integrated Products to convert between the ICs'...
Electronics Circuits Reference Archive Audio preamplifier circuits. There are thousands of preamplifier circuits. Here are three that are somewhat different and have garnered interest. Intercom preamp: A very convenient way of making an intercom system. Audio preamplifiers are essential components...
The metal detector circuit comprises several key components, including a power circuit, a sine wave oscillator, a PLL (phase-locked loop) circuit, and a hybrid amplifying circuit. The power circuit is made up of batteries GBI and GB2, filter capacitors...
Most of the power supply failure indicator circuits need a separate power supply for themselves. But the alarm circuit presented here needs no additional supply source. It employs an electrolytic capacitor to store adequate charge, to feed power to...
An NE592 or LM733 is utilized as a general-purpose video amplifier in this schematic. J2 and J3 deliver two anti-phase outputs. R2 functions as a gain control. The bandwidth is approximately 100 MHz. The NE592 and LM733 are integrated circuits...
The 4000 Series 4011B is a NAND gate used in conjunction with a 4AI NAND gate circuit group to create two loops of an unstable multivibrator. The first NAND gate and the second NAND gate operate at approximately 1...
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