This circuit uses a parallel resonant crystal to control the frequency. The circuit is from Radio Electronics magazine, February 1993. Equivalent transistors can be used.
This old 4-channel circuit was found in the December 1994 Electronics Now magazine. The circuit uses...
Silicon Labs CSP Package EFM32™ Leopard Gecko 32-Bit MCUs are part of the world's most energy...
This circuit appears several times on our website and in this section, for various purposes and minor...