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 simple circuit of effects is interspersed between the instrument and the amplifier. It is...
January 2017 - STMicroelectronics' new TN4015H SCRs with 40 A currents and high temperature...
This circuit is for old telephones with analog lines. It was found in the May 1988 Radio...