I then remembered why I ordered these TDA2050s in the first place! First thing I needed to do was find a beefy power supply.
I was out of luck, and this project was yet again set on the back-burner.Ī couple days ago, after checking out the datasheet I had on the TDA2050 amplifier IC (ordered these from AliExpress months ago), I realized that this IC would function with a single power supply.
#Sony transistor radio 1960s portable#
Fast-forward to after I have tested every transformer I could find in the house for one that was centre-tapped, and could provide 18-0-18 VDC. Transistor Radios Collectible Transistor Radios Shop by Category Best Selling Sony Icf-m260 Am/fm PLL Synthesized Clock Radio With Digital Tuning (18) 279.99 New 145.00 Used Panasonic RF-2400D Portable AM/FM Radio (118) 30.00 New 21.99 Used Studebaker Sb2000tg Retro Classic Portable Am/fm Radio Turquoise (6) 29.99 New 7. I had no such supply (the closest being a computer psu with a +12v and -12v rail), so I wanted to create my own. I had another problem though, all the circuits I was learning about required a split power supply, so one that supplies a positive and negative voltage, like +18v and -18v. So I set out to learn about creating amplifiers. I wanted to create my own amplifier from scratch to put into the clock radio. The entire time I was working on this project, I never stopped to think that “maybe the radio’s original amplifier just cannot provide the type of power that I have in mind”.Īfter this realization, it was back to the drawing board. The amplifier was also only being powered with 6v. This is where I refer back to the beginning of Part One where I point out the rating on the radio’s original speaker. I thought I was finished with it, but after some use, I realized that the audio would distort quite easily and I wanted to fix that. Overall, I was satisfied with this last revision.
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