previous <<==>> next
SOLID STATE
FIELD MULTIMETER » UM-Z2 «
SOLID STATE MULTIMETER » UM-Z2 « ZAKLAD ELEKTRONICZNO-MECHANICZNY / Poland (1970) ************************************************************************************* Dimension: ( W - D - H ) 80 mm x 130 mm x 45 mm / 3_1/8" x 5_1/8" x 1_3/4" Class 2.5 ; 100 kΩ / Volt ( DC & AC ) R A N G E S : Volt | 0.05 0.15 0.5 1.5 5 15 50 150 500 [V] ---------+--------------------------------------------------------------------------- Ampere | 0.015 0.05 0.15 0.5 1.5 5 15 50 150 500 [mA] ---------+--------------------------------------------------------------------------- Ohm | x100 x1k x10k x100k [Ω] ---------+--------------------------------------------------------------------------- Output | - 20 .. 0 .. +6 [dB] Analog "Solid State" MultiMeters were the "Link" between "VTVMs" and Digital "DVMs". Instead of Vacuum Tubes, here an Operational Amplifier ( Type 741 ) and Transistors insure the high Input-Resistance. This well designed & handy "Field MultiMeter" is powered by a 9 V Block-Battery and came in a Leather-Case. The ON/OFF-Switch ( ON- Status is shown by a RED LED ) is also used as ZERO-OHM-Adjust. The DC-POLARITY of the Test-Object is shown by +/- LEDs. When measuring AC both LEDs are illuminated. The »UM-Z2« DIAGRAM ... |
For stationary/long-term usage is an EXTERN 9 VOLT CONNECTION available