1N34A DATASHEET PDF

September 15, 2020   |   by admin

1N34A Datasheet, 1N34A Germanium Diode Datasheet, buy 1N34A Diode. The typical load on a 1N34A diode in a crystal radio is a crystal crystal radio is lower than you would expect from the Vf entry in the datasheet. 1N34A Germanium Diode, Package: DO Can be used in many AM, FM and TV-IF applications, replacing point contact devices.. Applications. TV audio.

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According to that site, you will need a bias current for most schottky diodes to get good performance.

You need the crystal earphone to avoid loading the tuning circuit and to keep the Vf low enough for the diode to datashfet the signal. My biggest problem when building one as a kid was that we lived so far away from any transmitter that you pretty much had to get everything perfect and have a good antenna in order to pickup anything at all. You need a low Vf because of the modulation scheme, not to avoid loading 11n34a tuning circuit. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

1N34A Datasheet(PDF) – Central Semiconductor Corp

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. The typical load on a 1N34A diode in a crystal radio is a crystal earpiece with an impedance of 20kOhm. How well it will do anything else is anybody’s guess.

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It may work well, it may not. Also worth noting is that Vf is dependent on temperature.

Get it working right, first, though. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

I wanted to build one again recently and all I had a was a Schottky diode with a Vf of around 0. Another thing to keep in mind is that they don’t have fanstatic range. Look at the graph above – with uA flowing I bet the forward volt drop is probably 0. They both use a piece of piezoelectric crystal to work.

But at mA it looks like it conducts 0. It lists Vf as 1V at 5mA It’s never this black or white: I think that “a piezo buzzer” today isn’t comparable to a crystal earpiece. This ties back in to what I said about building the first one right with all the right parts. With a lower If, Vf is also lower. It lists Vf as 1V at 5mA. As you can see from this diagram from here. How did I miss that?

It may well be the diode that is causing problems.

1N34A – 1N34A Germanium Diode Datasheet

Perhaps I am misunderstanding the 11n34a Here’s link to a site about crystal radios with some hints about schottky diodes: Use a proper crystal radio earphone! Since a crystal earphone draws very little current, Vf is also lower. It also indicates that most schottky diodes aren’t really good for crystal radios. Post as a guest Name. The answer lies in a combination of things.

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Andy aka k 10 The trick lies in the combination. Thanks again for your replies. They are finicky enough that even slight variations will cause a failure – substituting parts is just asking for trouble. A buzzer is made to work specifically at a particular frequency.

Germanium Diode 1N34A

Thank you for your answer and the clarification about why I need a low Vf and crystal earpiece. Being a kid, of course, meant that I never got things really good enough. It all comes back to building the receiver right with all parts as specified, then you can start experimenting with buzzers datssheet earphones or using other diodes, etc.

I tested it indoors as well though and it still didn’t work so it wasn’t exclusively the temperature.

1N34A Datasheet pdf – Point Contact Germanium Diode – Honey Technology

It is my understanding that Ge diodes were the choice for crystal sets because their low Vf does not load the tuned circuit. Whether and how well it works at other audio frequencies is anybody’s guess. Sign up using Facebook. The 1N34A will conduct 0.