Radiofun232

Audio amplifier on 5 Volt, going from 50 Hz - 18 KC with 300 mW output, heatsink not necessary on 5V 9:13
Audio amplifier on 5 Volt, going from 50 Hz - 18 KC with 300 mW output, heatsink not necessary on 5V radiofun232 431 1 день назад
2 Transistor emitter coupled Multivibrator, also for HF, Circard 1975 schematic/good properties demo 9:04
2 Transistor emitter coupled Multivibrator, also for HF, Circard 1975 schematic/good properties demo radiofun232 467 1 день назад
A discarded battery drill for 12 V-18 V used in hobby. To make "round" things of wood, plastic, etc. 1:24
A discarded battery drill for 12 V-18 V used in hobby. To make "round" things of wood, plastic, etc. radiofun232 1,233 3 дня назад
Audio micr. amplifier for electret capsule with 3 transistors on 3 - 2.2 Volt demo & practice VLOG 11:21
Audio micr. amplifier for electret capsule with 3 transistors on 3 - 2.2 Volt demo & practice VLOG radiofun232 439 7 дней назад
Microphone amplifier for electret capsules. Made with 3 transistors, works between 3 and 2.2 Volt. 13:31
Microphone amplifier for electret capsules. Made with 3 transistors, works between 3 and 2.2 Volt. radiofun232 630 9 дней назад
The EMY-63M/P Electret microphone capsule going from 20Hz-20 KC and its extremely good properties 9:12
The EMY-63M/P Electret microphone capsule going from 20Hz-20 KC and its extremely good properties radiofun232 540 12 дней назад
The YX 8018 LED Booster oscillator Joule Thief Chip tested / conclusions 9:44
The YX 8018 LED Booster oscillator Joule Thief Chip tested / conclusions radiofun232 519 2 недели назад
Hearing aid for elderly, looking back to an earlier older circuit, with its good properties 7:42
Hearing aid for elderly, looking back to an earlier older circuit, with its good properties radiofun232 379 2 недели назад
Drying my first tobacco leaves (July 2024) but is this a good approach? 5:00
Drying my first tobacco leaves (July 2024) but is this a good approach? radiofun232 386 2 недели назад
Very sensitive scale (lower than 1 gram) & movement or earthquake or wind detector via oscillator 6:08
Very sensitive scale (lower than 1 gram) & movement or earthquake or wind detector via oscillator radiofun232 2,407 2 недели назад
Good quality 2-3 Watt audio amplifier with pleasant (bass) sound: schematic and demo 12:14
Good quality 2-3 Watt audio amplifier with pleasant (bass) sound: schematic and demo radiofun232 919 3 года назад
Radio oscillator (1 PNP transistor) for Long Wave and VLF schematic and demo 145 KC-167 KC 8:18
Radio oscillator (1 PNP transistor) for Long Wave and VLF schematic and demo 145 KC-167 KC radiofun232 888 1 месяц назад
Overview from my published books radiofun232 on the Lulu website 7:19
Overview from my published books radiofun232 on the Lulu website radiofun232 1,483 7 лет назад
Radiofun232 on YouTube (updated monthly) 0:52
Radiofun232 on YouTube (updated monthly) radiofun232 24,711 9 лет назад
Ground loop hum (50 Hz or 60 Hz) in audio amplifiers: what is the cause and how to cure it? 13:18
Ground loop hum (50 Hz or 60 Hz) in audio amplifiers: what is the cause and how to cure it? radiofun232 1,015 3 недели назад
Make a superhet AM radio from 500 KC - 1.7 MC part 1: local oscillator and mixer circuit & schematic 14:25
Make a superhet AM radio from 500 KC - 1.7 MC part 1: local oscillator and mixer circuit & schematic radiofun232 2,237 3 года назад
1 transistor sound generator of the 1970's: " wood blocks and claves sound" 3:52
1 transistor sound generator of the 1970's: " wood blocks and claves sound" radiofun232 694 3 недели назад
Audio amplifier on 3 Volt (2 x 1.5 V batteries) only usable to amplify say a "beep" signal 5:38
Audio amplifier on 3 Volt (2 x 1.5 V batteries) only usable to amplify say a "beep" signal radiofun232 688 2 года назад
Mini audio amplifier on 0.3 Watt 6-12 Volt that everyone can make (schematic & demo) 8:41
Mini audio amplifier on 0.3 Watt 6-12 Volt that everyone can make (schematic & demo) radiofun232 1,135 2 года назад
Amplifier max 2-3 Watt for audio/radio or another application, drive a coil etc (schematic & demo) 11:55
Amplifier max 2-3 Watt for audio/radio or another application, drive a coil etc (schematic & demo) radiofun232 1,043 3 года назад
How to make a good hum free electronic power supply (series regulator: long video & actual drawing) 17:22
How to make a good hum free electronic power supply (series regulator: long video & actual drawing) radiofun232 2,774 5 лет назад
Basic 1 transistor radio oscillator for frequencies between 400 KC and 6 MC or higher schematic/demo 14:43
Basic 1 transistor radio oscillator for frequencies between 400 KC and 6 MC or higher schematic/demo radiofun232 1,181 3 года назад
Polymeric clay and N-FET BF256 B that can replace the N-FET BF245 a,b,c, one minute video 1:04
Polymeric clay and N-FET BF256 B that can replace the N-FET BF245 a,b,c, one minute video radiofun232 808 4 месяца назад
Long Wave radio reception (say BBC in Europe) via a 2 transistor setup + a wire antenna (schematic) 12:36
Long Wave radio reception (say BBC in Europe) via a 2 transistor setup + a wire antenna (schematic) radiofun232 1,867 2 месяца назад
Mini 50 mW audio amplifier with only 2 transistors at 6V/25 mA demo & schematic 7:26
Mini 50 mW audio amplifier with only 2 transistors at 6V/25 mA demo & schematic radiofun232 570 2 года назад

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