What kind of mine does ore radio use
Publish: 2021-04-07 12:34:47
1. Ore refers to some metal ores, such as zinc sulfide, which have unidirectional conctivity when contacting with metal wire, and can be used to detect high-frequency signals. Not any ore can be used as a detector. At that time, an article introced the use of sulfur and zinc to make "ore" for detection
there were two kinds of ores used at that time: fixed type and movable type. The fixed type is to adjust the ore and metal contact pin, which can be used when bought back. There is a hole on the shell to move the stylus, because once the ore vibrates, it may lose its detection function and need to be readjusted; The movable ore's stylus has a small handle, which can be adjusted at any time to find the point with the best wave effect
with the emergence of semiconctor diode, because of its small volume and high detection efficiency, no adjustment is needed, and the ore disappears.
there were two kinds of ores used at that time: fixed type and movable type. The fixed type is to adjust the ore and metal contact pin, which can be used when bought back. There is a hole on the shell to move the stylus, because once the ore vibrates, it may lose its detection function and need to be readjusted; The movable ore's stylus has a small handle, which can be adjusted at any time to find the point with the best wave effect
with the emergence of semiconctor diode, because of its small volume and high detection efficiency, no adjustment is needed, and the ore disappears.
2. A diode like 2ap9. Mainly used for detection
3. Now the ore is not common, and now diodes can be used instead of cuprous oxide (cuprous oxide proction method will heat the copper sheet to red heat quickly, such as water, if there is pink material, it will be successful)
as long as it has the detection function, if you don't want to know what it is, I only know lead sulfide
as long as it has the detection function, if you don't want to know what it is, I only know lead sulfide
4. Ore radio uses ore as detector. Neither tube nor transistor nor integrated circuit is used, so ore radio is different from tube radio, transistor radio and integrated circuit radio.
5. Ore radio is a kind of passive radio without amplifying circuit, which is composed of antenna, ground wire, basic tuning circuit and ore as geophone. Ore is used as geophone, which originated from the early geophone element is made of natural ore directly. When it is used, it has to adjust its pressure and orientation on the ore through a metal probe. Ore radio is the simplest of all radio receiving equipment. Unless it is quite close to the radio station, the erection of its antenna and ground wire is very elegant. Find a plastic insulated pipe with a diameter of 20 mm, wind 70-90 turns with 0.62 enameled wire on it, connect a 360p single variable capacitor to both ends of the coil, and make a tuning loop for the selection, and connect a detector diode 2ap9 or ore detector at one end. The other end of the coil is the ground wire. Connect two terminals behind the detector tube and on the ground wire. Connect a headset of more than 1000 ohm. Connect an antenna in front of the detector tube to listen.
6. It's not easy to get ore now. It can be replaced by 2ap9 or 1N60 diodes. The effect of diodes is better than ore.
7. 1. Coil: 40 mm diameter wax paper cylinder, with 0.4 mm enameled wire, wound 80 circles
2. Now there is no ore, so the effect is the same when using germanium diode
3360 Pico farad single variable capacitor
4, a pair of earphone with impedance of 800-4000 ohm< One
52000 micro capacitor and one outdoor antenna The lightning rod is grounded and cannot be used as an antenna.)
7, good grounding wire Water pipe, heating pipe)
8, an open air arrester
just weld according to the wiring diagram. It can receive local medium wave broadcast.
2. Now there is no ore, so the effect is the same when using germanium diode
3360 Pico farad single variable capacitor
4, a pair of earphone with impedance of 800-4000 ohm< One
52000 micro capacitor and one outdoor antenna The lightning rod is grounded and cannot be used as an antenna.)
7, good grounding wire Water pipe, heating pipe)
8, an open air arrester
just weld according to the wiring diagram. It can receive local medium wave broadcast.
8. I made a mineral radio when I was a kid. I have books on this. It's very simple
the main parts are: coil, variable capacitor, ore detector, earphone. In addition, outdoor antenna and ground wire should be set up
first of all, you need to determine a circuit diagram, collect the parts according to the parts list on the circuit diagram, and then connect the wires
there is no place to buy ore detector now, but it can be replaced by detector diode. Its performance and effect are better than those of ore detector
the proction of mineral radio can be used as an enlightenment for children to learn radio technology.
the main parts are: coil, variable capacitor, ore detector, earphone. In addition, outdoor antenna and ground wire should be set up
first of all, you need to determine a circuit diagram, collect the parts according to the parts list on the circuit diagram, and then connect the wires
there is no place to buy ore detector now, but it can be replaced by detector diode. Its performance and effect are better than those of ore detector
the proction of mineral radio can be used as an enlightenment for children to learn radio technology.
9. Wire antenna, mineral and metal contact pin, wooden box, 8 ohm earphone, etc Ore radio doesn't use electricity
10. Commonly used are pyrite (also known as: natural copper, traditional Chinese medicine shop), galena. It's enough to use mung bean in the ore radio. Now it's all replaced by diodes. For example, 2ap9, 1N60.
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