PRM Models

The low cost, highly dependable ferroresonant stabilizing technique provides extraordinary isolation from a wide variety of source noise. The d-c output is inherently short-circuit proof and cannot expose delicate loads to over-voltage hazards, see Figure 7. Hence no crowbar, fuses, or bounding circuits are needed in the output. Conventional input circuit protection is required. Ferroresonant power supplies use no noise-producing switches or oscillators. Voltage setting is independent of delicate control settings or diode references, and requires no comparators, references, or limiters. Efficiency is 65-75%. Many models are UL recognized: UL 114 and 478. Consult factory.

Rack mounting of Series PRM is accommodated by the following rack adapters:

• Size A 180 Watts: RA 8-2, RA 9-3, RA 10-1
• SIZE AA 280 Watts: RA 8-2, RA 9-3, RA 10-1
• SIZE B 120 Watts: RA 14-3, RA 15-1, RA 16-4, RA 17-5
• SIZE C 300 Watts Dual: RA 8-2, RA 9-3, RA 31-1
• SIZE C 450 Watts: RA 8-2, RA 9-3, RA 38-1
• SIZE D 60 Watts: RA 14-3, RA 16-4, RA 17-5, RA 30-1