MOSFET RF Amplifier (CB9174E)

This circuit for dual-gate MOSFET was found in a 90’s Popular Electronics. The coils are according to the frequency range that must be amplified.

| Clique na imagem para ampliar |

Incandescent Light Effect (CB11374E)
With the circuit shown, when the brightness of one lamp decreases, that of the other increases. There is...
Light Activated Switch (CB3971E)
We find this circuit in a 1970 publication. Transistors can be replaced by current equivalents and LDR is...
Battery Charger (CB4789E)
We find this battery charger in a 90's Hands-On Electronics. The charging current is 2 A and when...