T-SCREAMER TS9 TS datasheet version 19/05/16 Use 1N diodes for D1, D2, D4 and connect a switch into ASYM pads: Real Tube Screamer units. not listed. Some information has been extracted from a 1N data sheet in Figure below. Example diode element names include: d1, d2, dtest, da, db, d 1N34 Ge, p, 84m, , n, p, , , , -, 60, 15u. D1 OA79 germanium signal diode . The first germanium diodes I used as a kid here in the US was the 1N34 and as far as I know they are still.
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Germanium Diodes and possible alternatives? Mar 6, 1. Feb 1, 46 0.
Germanium Diodes and possible alternatives? | All About Circuits
Hello, I am looking at building the simple signal tracer at PastTimesRadio. And here is the component list: Components Dafasheet Resistors 0. I have pretty much everything required, but do not own any Germanium Diodes, I have been looking for them in the UK, but many places do not stock them anymore and the diodes on ebay such as 1N60Ps are disputed as being Shottky diodes and those that aren’t are quite expensive and only have 2nd class delivery and I am not a patient man.
In the build blurb for the circuit, it states the following “The detector or demodulator diode should be a eatasheet quality germanium type, OA79 or similar. Don’t be tempted to use a silicon diode – it won’t work! I have gone through my diode box and datxsheet checked a selection from each of the types on two digital multimeters and also on my cheapy Chinese component tester, almost all show between 0. However, one set r1 diodes which I can’t fully confirm the number which begins 1NX, where X is smudged and unreadable on all the diodes all show a forward voltage of between 0.
So my questions are, would these diodes work in place of the required OA79 given that the have such a low forward voltage, or is datazheet something else that Germanium offers as well as a low forward voltage that would negate their use? If so what is it please? Mar 6, 2. Jan 29, 6, 1, Maplins UK, used to carry OA Ed Bray likes this.
Mar 6, 3. Mar 6, 4.
1N34A reverse recovery datasheet & applicatoin notes – Datasheet Archive
Mar 6, 5. Other than forward voltage, is there any other reason why Ge might be preferred over Si? It seems what was available previously does not seem so prevalent now, is it just down to cost, or d improvements in Si components caused the death of Ge types? Mar 6, 6.
Germanium Diode 1N34A
Nov 23, 8, 6, Mar 6, 7. Mar 6, 8. The D1 diode is a simple half wave rectifier for the RF probe input. Mar 6, 9. Nov 13, Maybe power of source signal is critical with voltage drop of diode and choosing between Ge-diode and 1NX is critical with frequency of the signal. In my batteryless crystal radio around 1MHz the 1Nx is performing better than Ge-diode because of its low voltage drop. Because of low drop, the headphones gets much power than Ge-diode. I heated the 1N so much with soldering iron and the voltage drop decreased from mV to mV, then the 1N were performing better than Ge-diode voltage drop around mV.
But if frequency could go around GHz then 1Nx power schottky might not rectify as Ge-diode can. Mar 6, Sep 17, 8, 2, Some of the low current 30mA Schottky diodes look promising. Don’t know if ddatasheet actually used as RF detectors. Thanks all, I appreciate your input.
Jan 15, 3, 1, I am not sure of availability in the UK. Glad it worked out for you.
Thinking back to the late s was my first crystal radios using those 1N34 diodes. They have been around for awhile. Mar 4, 2, While germanium diodes are datashee to find, Tunnel diodes are even harder. Germanium was one of the first transistors and the material just has issues. The “cat’s wisker” detector was an early detector.
Datasheeg 8, Thanks again all, just for future reference I built the circuit on a breadboard yesterday and tried both the Schottky and Ge diodes and it worked fine both ways. At least I know now. Posted by prashanthb in forum: Diodes and zener diodes Posted by Shocker33 in forum: Are These Germanium Diodes?
Posted by Simmo in forum: Germanium diodes Posted by samuel. You May Also Like: Power for Airborne Systems: Negative Feedback Part 3: Simplified Power Supervision datashewt Portable Devices: A New Battery Management IC from Maxim There are many integrated circuits that can help you to optimize the performance of battery-powered devices.
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