Call indicator (CB7235E)

We found this circuit in an old neon lamp application manual. The circuit stores a call. The resonant reed-relay is not a common component today.

| Clique na imagem para ampliar |

Active cycle meter (CB7059E)
Found in an 80's Electronic Design, this circuit is based on the ICL7107 which is not an easy...
Linear Magnetic Field Sensor (CB5038E)
This circuit is used as a magnetic field sensor and is based on a Texas Instruments HaII Effect...
RIAA 3-Transistor Equalizer (CB1371E)
This circuit was found in a Japanese documentation of the 70's. It uses transistors of the era and is...