geekhack

geekhack Community => Off Topic => Topic started by: kmiller8 on Sun, 27 October 2013, 23:46:57

Title: Really cool Voltmeter
Post by: kmiller8 on Sun, 27 October 2013, 23:46:57

Quote

Non-Linear Systems manufactured and sold the first digital voltmeter. This is a video of one of their edge lit digital displays in operation. These early NLS digital meters used a resistor dividing network and relays to select the display digits. If you see one of these in operation you will hear a lot of mechanical relay noise as the range and digits are selected. NLS used this type of edge lit display until the mid 1960s

Title: Re: Really cool Voltmeter
Post by: tp4tissue on Sun, 27 October 2013, 23:59:05

(http://www.cute-factor.com/images/smilies/onion/baa60776.gif)