AC Power Supply Model 262M

For use with Models 540 and 544. Fully voltage regulated to provide highly stable, pure DC (225 watts) from 117 VAC. Panel DC ammeter. Instantaneous overload protection circuit prevents damage caused by excessive current drain; reset by momentary turn-off. Includes a complete VOX system. VOX controls are located on front panel. Low frequency components invoice below cut-off frequency of speaker actuate T/R function.

• Input: 117 VAC, 50-60 Hz
• Output Voltage: 13 VDC +/- 0.5 V
• Regulation: Better than 1% NL to FL @ 117 VAC
• Output Current: Zero to 18 A, built-in ammeter
• Ripple: Less than 60 mV p-p @ 18 A and 117 VAC
• Circuit Protection: Breaker trips at 20 A (manual reset)
• Semiconductors: 4 transistors, 1 SCR, 7 diodes
• Size: HWD 4.5" x 8" x 13"
• Weight: 16 lbs

• Mic Input Impedance: 2 Megohms, min. for crystal, ceramic, or hi-Z dynamic microphones
• Gain: Unity
• Max. Mic. Level: 250 mV, rms
• VOX Sensitivity: Less than 1 mV @ 200 Hz trips T/R
• Delay: Adjustable from 0.1 to 1 sec.
• Semiconductors: 1 IC, 10 transistors, 3 diodes