This circuit is from an old Mullard (Philips) manual with applications using the 555. Choosing appropriately the resistors and the timing capacitors, the ranges obtained can exceed days.
This circuit is suitable for SSB modulation and was obtained from an amateur radio documentation from...
This circuit was found in a 1968’s publication and uses germanium transistors. The characteristic...
This configuration using a CMOS IC produces a 1 MHz signal. The circuit can be used as clock in...