This circuit is from Motorola documentation, but can be implemented with virtually any phototransistor and any general-purpose transistor. The supply voltage can also be changed.
This circuit was found in an American 80's documentation. The transistor is of germanium of the...
This circuit produces a signal in the range corresponding the the VHH channels between 2 and 6....
Using a general-purpose transistor this AC amplifier was found in the November 1993 issue of...