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Using two gates from a CMOS 4011 NAND chip, a simple square wave oscillator can be made. Alternatively, a CMOS 4001 chip can also be used, or a TTL equivalent. In this circuit, the mark-space ratio can also be...
The 4Y4 is a monolithic liquid crystal display rangefinder circuit. The instrument comprises an ultrasonic transmitter, a receiver, an LCD display, buttons, switches, and a buzzer (or speaker). To simplify wiring, the 4Y4 is directly welded to the back...
The Hartley Oscillator is a valuable circuit for generating high-quality sine wave signals in the RF range (30 kHz to 30 MHz). However, at the upper limits of this range and beyond, the Colpitts oscillator is typically favored. Both...
As discussed in previous blog posts, the pin 5 terminal serves as a voltage control terminal, allowing for the adjustment of threshold and trigger levels. Typically, the control voltage is set at +2/3VCC due to the internal voltage divider....
A capacitor in series with the crystal may be utilized to adjust the oscillator output frequency. The value may range between 20 pF and 0.01 µF, or it may be a trimmer capacitor, and it will approximately equal the...
An op-amp based Colpitts oscillator in Multisim displays a "timestep too small" error when the run button is pressed. Despite extensive research and attempts to resolve the issue, the error persists. The design features a C-L-C pi circuit that...
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