The top 10 crystal oscillators from SnapEDA
Parts

The top 10 crystal oscillators from SnapEDA

Elizabeth Bustamante @ snapeda.com lists the top 10 crystal oscillators used today. She writes: A crystal oscillator is an electronic circuit that generates an electrical signal with a very precise frequency. To achieve this, it uses the mechanical resonance of a vibrating crystal made...

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CH340E, A New Small Serial to USB Chip
IC

CH340E, A New Small Serial to USB Chip

WCH, a Chinese integrated circuits manufacturer, has just released a new serial to USB chip called CH340E. Unlike other CH340 chips, it doesn't require an external crystal and also needs less PCB space and BOM. CH340 is a 3x3mm tiny chip comes in MSOP10 package and has 10...

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Simple crystal tester
Test/Measurements

Simple crystal tester

Dilshan Jayakody build a simple crystal tester based on Colpitts oscillator. He writes: This is simple Colpitts oscillator to test commonly available passive crystals which range between 2MHz to 27MHz. This unit must connect to an oscilloscope and/or frequency counter to get the...

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Ovenized crystal oscillator frequency stability
Timer

Ovenized crystal oscillator frequency stability

E. Schrama @ ejo60.wordpress.com uses an Arduino and a DCF77 time signal receiver to test the stability of an ovenized crystal oscillator running at 1 MHz. In this experiment I will use an Arduino and a DCF77 time signal radio receiver to measure the stability of an ovenized crystal...

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