# DM70

> Electron tube product

**Wikidata**: [Q9200496](https://www.wikidata.org/wiki/Q9200496)  
**Source**: https://4ort.xyz/entity/dm70

## Summary
The DM70 is a subminiature vacuum tube model manufactured by Koninklijke Philips NV in 1952. It belongs to the "magic eye tube" class, which provides a visual indication of the amplitude of an electronic signal, making it useful in early electronic devices.

## Key Facts
- **Instance of**: Vacuum tube model
- **Subclass of**: Magic eye tube, subminiature vacuum tube
- **Manufacturer**: Koninklijke Philips NV
- **Inception**: 1952
- **Image**: [DM70 magic tube](https://commons.wikimedia.org/wiki/Special:FilePath/DM70_magic_tube_from_Geloso_G.257.jpg)
- **Commons category**: DM70
- **Described by source**: Radiomuseum (2020-09-25)
- **Wikipedia languages**: Commons, Polish
- **Google Knowledge Graph ID**: /g/121r2bfj
- **Radiomuseum ID**: dm70

## FAQs
### Q: What is a magic eye tube?
A: A magic eye tube is a type of vacuum tube that provides a visual indication of the amplitude of an electronic signal, often used in early electronic devices.

### Q: Who manufactured the DM70?
A: The DM70 was manufactured by Koninklijke Philips NV.

### Q: When was the DM70 introduced?
A: The DM70 was introduced in 1952.

### Q: What is the DM70 used for?
A: The DM70 is a subminiature vacuum tube that serves as a magic eye tube, displaying signal amplitude visually.

### Q: Where can I find more information about the DM70?
A: Additional details can be found on Radiomuseum ([link](https://www.radiomuseum.org/tubes/tube_dm70.html)).

## Why It Matters
The DM70 is significant as part of the early electronic component history, particularly in the development of subminiature vacuum tubes. Magic eye tubes like the DM70 were crucial in early electronic devices, providing a visual representation of signal amplitude. These tubes played a role in the transition from vacuum tubes to transistors, offering a compact and functional solution for signal monitoring in early electronics. The DM70’s classification as a subminiature vacuum tube highlights its contribution to miniaturization efforts in electronic components during the mid-20th century.

## Notable For
- **Visual signal indication**: The DM70’s magic eye tube design made it useful for monitoring signal amplitude in early electronic systems.
- **Subminiature design**: As a subminiature vacuum tube, it was compact and efficient for its time.
- **Historical significance**: It represents an early example of Philips’ contributions to electronic component development.
- **Radiomuseum documentation**: The tube is well-documented on Radiomuseum, providing a reference for vintage electronics enthusiasts.

## Body
### Classification
The DM70 is classified as a **magic eye tube**, a type of vacuum tube that visually indicates the amplitude of an electronic signal. It is also a **subminiature vacuum tube**, reflecting its compact design for early electronic applications.

### Manufacturing
- **Manufacturer**: Koninklijke Philips NV
- **Inception**: 1952

### Technical Details
- **Image**: A photograph of the DM70 is available on Wikimedia Commons ([link](https://commons.wikimedia.org/wiki/Special:FilePath/DM70_magic_tube_from_Geloso_G.257.jpg)).
- **Commons category**: DM70
- **Radiomuseum reference**: Detailed specifications and historical context are available on Radiomuseum ([link](https://www.radiomuseum.org/tubes/tube_dm70.html)).

### Cultural and Historical Context
- The DM70 is part of the broader category of **vacuum tube models**, contributing to the evolution of electronic components.
- It is documented in multiple languages, including Polish, reflecting its global relevance in early electronics.

### Digital Presence
- **Google Knowledge Graph ID**: /g/121r2bfj
- **Radiomuseum ID**: dm70

## References

1. [Source](https://www.radiomuseum.org/tubes/tube_dm70.html)