This amplifier was found in a 70s documentation. The product gain x bandwidth is 350 MHz. The integrated circuit is from that time, uncommon today.
Found in a 1967 Ferranti documentation, this circuit uses a LDR from that time as a sensor....
This low-pass filter was found in an American publication from the 80's. The circuit uses an...
Who is the fastest? This circuit with neon lamp is powered directly by the network (there is no...