This crystal oscillator generates a 20 MHz signal. Equivalent transistors such as BF494 and 2N2222 can be used. The stabilizing diodes can be 1N4148.
This circuit is from the 1977 RCA CMOS Integrated Circuit from the RCA of 1977. The power supply of...
The MOS field effect transistors of this circuit are not very common, as it is a project from the...
This circuit triggers a relay when a pulse of light hits the LDR. The potentiometer serves as a...