Regulated Power Supply LL-902

The Lambda LL-902 is one of the LL Series of regulated power supplies with an IC as the adjustment element. Features include: coarse and fine voltage adjustment; current adjustment; and a switch for measuring voltage or current on the analog meter.

Initially, the models had an adjustable overvoltage (OV) protection option for the LL-901 ($20), LL-902 ($20), and LL-903 ($25).  The LL-905 did not have an  OV option.  Some models may have been marked "-OV" or "-V" to indicate that the OV option was installed.

Later production runs added the OV option as standard in all 3 models, and sold all 4 models for $99.

One export version was "-W" (France).

The LL Series included:

In questo link sono elencati 5 modelli, di cui 4 con immagini e 1 con schemi.
Elenco delle radio e altri apparecchi della Lambda Electronics Corp., Corona NY