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DZ - About technique
Добавлен 27 ноя 2020
Kit Radio HX 108-2. Operating principle Superheterodyne.
Kit Radio HX 108-2. Operating principle Superheterodyne.
Просмотров: 1 237
Видео
SW receiver. Very simple superheterodyne.
Просмотров 1,1 тыс.3 месяца назад
SW receiver. Very simple superheterodyne.
Radio 500 - 1600 Khz - IN WORK. What kind of radio do you think it is?
Просмотров 5615 месяцев назад
Radio 500 - 1600 Khz - IN WORK. What kind of radio do you think it is?
Frequency counter kit and RF amplifier
Просмотров 1,2 тыс.8 месяцев назад
For testing radio assemblies, I purchased this frequency counter - kit. According to the manufacturer's description, it can be used both to check quartz as well as to check or measure frequencies in some radio installations. After making the kit, I noticed that it measures with good accuracy only certain quartzes. Also, I tried to measure the working frequency of some radio installations and I ...
Radio Receiver MW/SW - Regenerative
Просмотров 20 тыс.10 месяцев назад
The assembly is carried out according to a classic receiver scheme with reaction (regenerative). It consists of two floors, one for radio frequency, equipped with T1 and the second for audio frequency, equipped with T2. The radio frequency floor works as follows: The signal of the broadcasting station is selected by the circuit formed by L2 - C2 and then it is amplified by the transistor T1. Pa...
Receiver FM with VARIABLE INDUCTOR.
Просмотров 2,8 тыс.Год назад
Super regenerative - Simple FM radio.
Adjustable voltage power supply - LM 317
Просмотров 699Год назад
Assembling adjustable voltage power supply - LM 317
Radio receiver FM 88 - 108 MHZ. Synchrodyne
Просмотров 5 тыс.Год назад
Synchrodyne receiver In this type of receiver, to increase the reception sensitivity, a local oscillator is used. The frequency generated by this oscillator is equal to the frequency of the received signal. Practically, the local oscillator generates the frequency of the signal of the received station (carrier signal), and by mixing the useful signal (audio) is obtained. In other words, by sync...
Buggy MacPherson suspension. RC Car - Homemade.
Просмотров 2 тыс.Год назад
Buggy - MacPherson suspension.
Reflex radio receiver - AM - 550 - 1600 KHZ - Homemade.
Просмотров 14 тыс.Год назад
Reflex receiver. The reflex radio receiver is the one where some stages are used with a double role. In the present case, the assembly made up of transistors T1 and T2 works both as a radio frequency amplifier and as an audio frequency amplifier. The radio frequency signal selected with the aid of the tuned circuit L1 - C1 is amplified by the two transistors, then after the signal has been dete...
How to make a simple Audio Amplifier. With BD 135 and 138
Просмотров 5542 года назад
Audio amplifier 2 W. Power supply 9 - 12 V.
Through the evaporation and precipitation processes we obtained this salt ornament.
Просмотров 832 года назад
Through the evaporation and precipitation processes we obtained this salt ornament.
Radio FM Super Regenerative - Test
Просмотров 1,1 тыс.2 года назад
Super regenerative receiver In this type of receiver, (as in the synchrodyne radio receiver), a local oscillator is used to increase the reception sensitivity. Another essential aspect in the operation of this type of receiver is that the received signal influences the amplitude of the oscillations generated by the local oscillator. In the present case, the essential element of the receiver is ...
Monitor repair - 22 inch. CCFL replacement with LED
Просмотров 8962 года назад
Monitor repair - 22 inch. CCFL replacement with LED
Car RC 4WD - Rear suspension. Part 3/5
Просмотров 2,3 тыс.2 года назад
Car RC 4WD - Rear suspension. Part 3/5
Regenerative radio receiver (531 - 1611 kHz)
Просмотров 19 тыс.2 года назад
Regenerative radio receiver (531 - 1611 kHz)
Car RC 4WD - Steering, suspension - front. Part 2/5
Просмотров 14 тыс.2 года назад
Car RC 4WD - Steering, suspension - front. Part 2/5
Car RC 4WD - Steering, suspension - front. Part 1/5
Просмотров 35 тыс.2 года назад
Car RC 4WD - Steering, suspension - front. Part 1/5
AM radio receiver - with direct amplification
Просмотров 17 тыс.3 года назад
AM radio receiver - with direct amplification
Very informative video
Thank you!
Very informative video
Very good.
Thank you for your comment.
Ok, if you can understand foreign
😮 Now this is impressive!I am scared to try to build one transistor radios because most of the ones i made are not working or not working very good..Most of the people showing them forget to mention the very high audio gain amplifier used for such radios but yours it seem to work very good.
Multumesc pentru aprecieri. Sa il incercati pe cel de aici: ruclips.net/video/PojBHqtzlAI/видео.html Functioneaza cu casti. Se poate folosi si un aplificator audio cu LM386.
Great! I built two. The first one didn't work and the second one worked. After I did the second one, I fixed the first one as well. They have a pretty good sensitivity considering that it picks up stations in the city from over a thousands of kilometers and even from the UK, poor. I ordered from ebay, from AliExpress I ordered twice and they never arrived. The first time I got my money back, the second time I lost 20 dollars 😁. AliExpress is a lottery, you don't get half of the ordered products.
Now everything has been replaced with DSP chips. DSP chips with digital control are okay but with variable capacitors are ridiculous (found on cheap radios)
Here we learn the basics. 🙃
De unde l-ați achiziționat?
AliExpress
please tell me which part of the radio the 2 input wires will connect to to measure the frequency
Before the diode.
Muy bien, a pesar de no tener dialogos con voz o texto, las imagenes dicen mas que mil palabras; justo estaba buscando esto para un tv de 19" tambien de la marca LG.
Good luck!
Superb ! Multe mulțumiri de la Cluj, 73!
Multumesc!
You have gained my like... Greetings from Argentina❤
Thank you!
I love it very good this is the best video ever
Thank you!
Could I make regeneration control with a potentiometer?
Not. Only in this case: ruclips.net/video/9P8bRiwGwd0/видео.html
Its SSB yes?
Boa noite. Me tire uma dúvida por favor. O T1, poderia usar também o BC 548, 2n2219? Obrigado.
Teoricamente... sim. O receptor provavelmente ficará instável.
@@dz-abouttechnique1849 Boa noite. Em SW sintoniziu a banda de 40Metros? Radioamador.
Multumesc pentru informatii. Am realizat amplificatorul intocmai cu componentele specificate si conform schemei si nu functioneaza. Ar trebui cumva iesirea lui prin condensatorul de 1nF sa fie din colector, nu din emitorul lui T2 ? Multumesc!
Iesirea este din emitorul lui T2, prin C3. Ati folosit tranzistoare S9018? Nu stiu ce sa spun...Montajul meu este destul de sensibil...practic si capacitatea mainii influenta valoarea afisata.
Multumesc mult, am folosit C9018. O sa mai verific daca nu am facut cumva vreo greseala. Numai bine!
Where are you located. Heard Bulgarian radio stations:)
Only music,We couldn't even know whether the circuit worked or not.
If you watch the clip, you will also see the functionality test.
I love the Manhattan style breadboard/components!
Thank you!
Bad edit
I'm not perfect. I will learn. 😏
Este eficient acest tip de amplificator. In video insa, nu se poate vedea clar numerotarea si valorile componentelor folosite. Aveti o schema ? Multumesc
Sigur. Schema si valorile componentelor le gasiti in clip, minutul 9:02. Conexiunile trebuie facute cu un cablu ecranat. Spor la treaba!
I have a question What is the range of mw and sw that we can receive with this radio???? Pleas answer
MW/SW maximum 2000 km. This device has excellent performance: ruclips.net/video/ApwX6qniuos/видео.html
Foarte selectiv din ce se aude. Excelent! Ce rol are potentiometrul R1 de 1M din basa lui Q1, de rf amplif sau deregenerare? De asemenea, am o intrebare, ati avut un motiv special de alegere a unei IF atat de joase? Fiindca in clipurile dvs cu radioul MW si SW nu se aud 'imagini' ale posturilor. Mulțumesc mult.
Am folosit R1 pentru a gasi mai usor punctul optim de functionare al oscilatorului. Plus ca pe masura ce se consuma bateria, trebuia ajustata din nou tensiunea din baza lui Q1. Intr-o versiune mai complicata se poate folosi o baterie cu amperaj mai mare si un stabilizator de tensiune. Etajul echipat cu Q1 este amplificator, mixer si oscilator. Am tot testat diferite frecvente intermediare, insa din cauza interferentelor si semnalelor parazite am ajuns in final la acea frecventa mai joasa.
in NAME this video reWrite ... #Regenerative
Circuit diagram?
Scheme here: ruclips.net/video/ApwX6qniuos/видео.html Then make the changes shown in the clip. Good luck!
@@dz-abouttechnique1849 thanks 👍
NİCE proje.
Thank you!
Interesant!Dar totuși mi se pare destul de complicat la prima vedere transformatorul 🙄.De asemenea e din ce in ce mai greu sa obțin un condensator variabil mai ales de cel din aluminiu..Nu se mai găsesc neam unde locuiesc..Oamenii au dat la reciclat radiourile vechi si cand ma gândesc cat de valoroase sunt aceste piese! Despre funcționarea radioului nu am nimic de obiectat.Felicitari!
Multumesc pentru comentariu! Se pot folosi si condensatoare variabile de pe site-urile chinezesti, cele cu folie izolatoare sau se pot folosi diode varicap. Evident, in functie de capacitatile pieselor se va reface si calculul estimativ al frecventei de lucru. Exista calculatoare online pt. frecventa si inductanta. Urmatorul radio DIY va fi cu diode varicap sau echivalente. Referitor la transformatoare: important este sa respectati sensul de bobinare, ordinea infasurarilor si nr. de spire. In cazul TR 2 (filtru) nu este asa important, se mai poate regla miezul, insa in cazul oscilatorului, esentiala este infasurarea dintre pinii 1 si 2. Daca este o spira in plus, montajul este prea sensibil, daca este in minus, montajul nu functioneaza pe toata banda de frecventa dorita.
continuer encore. prévoyez-vous de l'utiliser tous les jours?
Je ne comprends pas...
Well done, good success, my compliments! Do you have published the schematic somewhere? 16 May 2024.
Scheme here: ruclips.net/video/ApwX6qniuos/видео.html Then make the changes shown in the clip. Good luck!
@@dz-abouttechnique1849 OK thanks! But (sorry) it could be better to show an updated circuit during your most recent video, only an opinion, b.t.w. I know that sometimes that is/can be difficult, anyway.
@@radiofun232 There is no problem..
Use two hands - one tune LC tank, other - positive feedback knob.
I understand.
Reflex superhetorodyne receiver with single transistor. 4IN1 ( mixer, oscillator, IF amp, AF amp. )
You're right. Thank you for your comment!
This circuit like a regenerative / direct conversion PLL receiver.
From my research and in specialized literature it is also called - synchrodyna.
Rất tuyệt vời bộ thu sóng SW đam mê nghề điện tử
Thank you!
cam ce zona de frecventa acopera noul filtru de intrare ?
Cred ca 8 - 12 Mhz. Trebuie sa incerc si cu o antena exterioara pentru a fi sigur.
good reception, do you have a schematic? Heinz, DE0RST
Scheme here: ruclips.net/video/ApwX6qniuos/видео.html Then make the changes shown in the clip.
cade o pdf pra vendas?
I do not understand...
I don't see why the IFTs were rewound to get 145 kHz, and builder did not keep the std 455 kHz of the IFTs, adjusting the Osc coil to suit since he was winding a new osc coil anyway. Also, I agree with a previous commentor that the design is not simple. Nevertheless, it is useful to an experimenter in that it incrementally builds upon the previously buily Reflex TRF radio. Also, I would have replaced the bulky 2-gang Tuning Air capacitor with varactor diode tuning with a 10-turn potentiometer. But, this is a really good effort from which others can lrarn to mix-and-match! Bravo !
Thank you for your comment.
Very good
Thank you!
How did you make the universal joint
ruclips.net/video/qEthzwE-HbI/видео.html
Thanks
I am waiting for the result.🙂
Can You send a schema ? Great project
You can find the scheme here: minute 0:10 Good luck!
What tool was used to cut the grooves?
Cutter. Good luck!
Muito bom genial 😊 moro no sul do Brazil❤❤❤❤❤❤❤❤❤❤❤
Saudações!
Falta sintonia fina ...
Esquema simplificado para iniciantes.
That's excellent project , i am happy for you , in next videos make video on transmitters like medium wave, shortwave and fm transmitters
I'll try. Thank you for your comment.
Finally, it is not simple at all. One modul, second, third....
Does it need a ground wire?
Yes, if the signal is weak. If you are near a station (2 - 5 km), no.
Сначала наматывается катушка связи а потом поверх неё основная катушка, так сделано в импортных супергетеродинных приёмниках
Я так пробовал изначально. Посредственные результаты.
tantas cocegas na montagem mas para quê ? devia estar tudo montado juntinho para não haver interferências ,,,mas ficou bom ok para cima 37
Para observar a funcionalidade do oscilador. Obrigado!