IM-16 Voltmeter

The Heathkit IM-16 Solid-State Voltmeter combines the features of a vacuum tube voltmeter and the portability of a volt-ohmmeter in an attractively styled cabinet.  It operates from either the AC power line or the internal battery by single switch.

SPECIFICATIONS

DC VOLTMETER

Ranges . . . . . . . . . . . . . . . . . . .           0.5, 1.5, 5, 15, 50, 150, 500, 1500 volts full scale

Input Resistance . . . . . . . . . . .            11 Megohms on all ranges

Accuracy . . . . . . . . . . . . . . . . .           +/- 5% of full scale

AC VOLTMETER

Ranges . . . . . . . . . . . . . . . . . . .          0.5, 1.5, 5, 15, 50, 150, 500, 1500 volts full scale

Input Resistance . . . . . . . . . . .            1 Megohms on all ranges

Input Capacitance  . . . . . . . .            Approximately 100 pF (40 pF on 1000 V range)

Accuracy . . . . . . . . . . . . . . . . .           +/- 3% of full scale

Frequency Response   . . . . . . .            +/- 2 dB from 20 Hz to 1 MHz

OHMMETER

Ranges . . . . . . . . . . . . . . . . . . .          x1 (10 W center scale),  x10, x100, x1k, x10k, x100k, x1M

INPUT

Probe with shielded cable  . . .            AC—OHM/DC switch on probe. Single plug for probe and common connections. Circuit ground isolated from cabinet.

POWER SUPPLIES

Amplifier Circuit

Power Line . . . . . . . . . . . . .            105—125/210—250 VAC, 50/60 Hz

Battery . . . . . . . . . . . . . . . .            9-volt, NEDA 1602 or equivalent

Ohms circuit

Battery . . . . . . . . . . . . . . . .            1.5-volt “C” cell

GENERAL

Voltage Dividers . . . . . . . . . . .            1% precision resistors

Meter . . . . . . . . . . . . . . . . . . . .           6”, 100 uA, 100 degree movement

Transistor-Diode Compliment               1 -  Field effect transistor

                                                            6 – 2N3393 silicone transistors

                                                            1 – 6.8-volt zener diode

                                                            4 - silicone diodes

Color . . . . . . . . . . . . . . . . . . . . .          Beige, velvet finish

Dimensions . . . . . . . . . . . . . . . .           5-7/8” high, 16-3/8” wide, 5-7/8” deep

Net Weight . . . . . . . . . . . . . . .            7-1/2 lbs. (with batteries)