Found in an Elektor from the 90s, this TTL circuit can be used as a shield without any bouncing problems. The circuit must be powered with 5 V.
Found on Popular Electronics from the 1990s, this oscillator uses a general purpose transistor. The...
This circuit was obtained from National Semiconductor documentation from the 1990s. The circuit has a...
We found this circuit in a 2005 Linear Technology manual. Observe the component values and...