Problems With Loudspeakers IP012 (IP012E)

Broken wires can be soldered in the terminals. This problems cause the interruption or normal operation of a loudspeaker.

Problems in the cone can be corrected using a good glue.

1 to 15 MHz Crystal Oscillator (CB882E)
Frequency in this oscillator is controlled by a crystal. Any 1 MHz to 15 MHz can be used. The JFET can...
Divide-by-5 Using the 4018 (NI005E)
One pulse in the output is produce at each 5 pulses applied to the input. The circuit uses CMOS...
1 kHz CMOS VCO (CB1528E )
We found this circuit in a 1977 CMOS oscillators documentation. The power can be sourced with...