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DM70Sensibly equivalent¶ to:See also:
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The DM70 is a miniature tuning indicator designed for dry battery operation. This exhibit was made in Holland by Philips.The DM70 introduced in 1952 was one of the first miniature devices produced by Mullard.![](../pics/aag0113a.jpg)
The display changes from minimum to maximum for a 10 Volt change on the control grid. The discharge channel is tapered and the glowing column will travel further along as the voltage is altered. See DM70 for a diagram.Thanks to John Sykes for sending the photographs.The thin glass tube envelope is 9 mm in diameter and, excluding the B8D base pins is 43 mm tall.References: Data-sheet & 1040. Type DM70 was first introduced in 1952. See also 1952 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ![](../static/key.gif) g1 | ic | nc | f | f | nc | nc | a |
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Absolute Maximum Operating Conditions¶
CRT | Vh | Ah | Va | mAa | ![](../static/pdflogo.gif)
| 1.4 | 0.025 | 85 | 0.17 |
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Updated January 04, 2022.
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