Krohn-Hite 7602M

The Krohn-Hite 7602M is a wideband power amplifier delivering precise signal amplification across DC to 1 MHz with output power ranging from 5 W to 34 W continuous, depending on load impedance and frequency. The unit operates in three selectable gain modes with continuously variable gain up to 42 dB, making it suitable for laboratory testing, system integration, and industrial measurement applications requiring high fidelity and low distortion.

## Technical Specifications

**Frequency Range & Power Output**
• DC to 1 MHz operating range
• 34 W continuous at DC (1k Ω load)
• 68 W peak at DC
• 34 W continuous DC to 500 kHz (1k Ω load)
• 5 W continuous to 1 MHz (1k Ω load)
• 10 W continuous 100 Hz to 1 MHz (600 Ω load)
• 5 W continuous DC to 100 Hz (600 Ω load)

**Output Voltage & Current**
• 282 V rms open circuit, 800 Vp-p
• 130 V rms into 1k Ω load (DC to 500 kHz)
• 80 V rms into 1k Ω load at 1 MHz
• 55 V rms into 600 Ω load (DC to 100 Hz)
• 80 V rms into 600 Ω load (100 Hz to 1 MHz)
• ±200 mA rms output current (910 Ω load, DC to 500 kHz)

**Gain & Frequency Response**
• Gain up to 42 dB with three selectable ranges: 0–14 dB, 0–28 dB, 0–42 dB
• ±0.1 dB flatness DC to 10 kHz
• ±0.25 dB to 200 kHz
• ±0.5 dB to 500 kHz (0–130 V rms output)
• ±0.5 dB to 1 MHz (0–80 V rms output)

**Distortion & Performance**
• <0.01% harmonic distortion to 5 kHz at 175 V peak output
• <0.05% at 200 V peak output
• 600 V/µs slew rate (400 Vp-p)
• <0.5 Ω internal impedance DC to 10 kHz; 5 Ω at 100 kHz; 20 Ω at 1 MHz
• 80 dB common-mode rejection ratio

**Output Control & Protection**
• Variable DC offset 0 V to ±200 V (open circuit)
• 2 mV/°C temperature drift; <1 mV for 10% line voltage change
• <0.1% load regulation DC to 10 kHz, rising to 2% at 1 MHz
• Foldback current limiter with front-panel clipping indicator

## Key Features

• Three amplifier modes: A, A–B, and –B
• AC or DC input coupling selectable
• Output stable into reactive and resistive loads
• Optional remote gain control (Option 0015): ±10 Vdc proportional input
• BNC input connectors; binding post output standard
• Optional rear-panel BNC and binding post connectors available

## Compatibility & Integration

• 90–132/198–264 VAC operation, 50–400 Hz, 200 W power consumption
• Accepts reactive and resistive loads