Speed game for 3 competitors (CB20958E)

We found this circuit in a Popular Electronics from the 80s. It is a game of reaction speed for 3 competitors. Indicator LEDs are used.

| Clique na imagem para ampliar |

Nicad Charger (CB13544E)
This circuit is intended for charging 12 V Nicad batteries, which corresponds to 10 common...
Discharger limiter for Nicad (CB9546E)
This circuit for discharging NiCad batteries limits the current to a value that can be adjusted in the...
Variable voltage regulator (CB21192E)
This current-limited circuit was found in a Popular Electronics from the 90's. ...