#fine_arts & #electronics
With the Texas Instruments TPA3221 brings a descendant of Akita Family out (TPA3251 TPA3255) which integrates prepress and analog voltage generation. It is thus be appropriate to replace the previous "long-running" TPA3118 TPA3116 as well. Other future members of this family (Boxster) are TPA3220, TPA3223 ...,de
Power banks are a convenient means of choice for supplying small projects such as IoT, streaming or sensors. But what's with low quiescent current, efficiency and maximum performance? Ideally the cells should be Exchange or compile initial. Pre tipped (cheap) power banks...
In preparation of the "final" version of the TPA32XX amplifier ((TPA3245, TPA3251, TPA3255) there's a dedicated AFE module 2-stage design with mail filter-feedback (PFFB).) The implementation of PFFB relating to this module also works for other class D ICs, such as, for example, TPA3116, TPA3118...
Experience has shown that most / all bluetooth modules available on the market have problems of various kinds. Is it generating noise, receiving noise, have a poor coverage and/or bad audio quality.
150W constant current sink (60V 10A) - battery capacity Tester
Battery charger on the basis of the BQ24450 (UC3906) with isolated input to load several AGM/GEL cells in series.
On the basis of experience and measurements with TPA3251 boards from TPA3251D2 - 2 x 175W stereo 350W Mono class-D amplifier rises the "TPA3245/51/55 - universal" Board for up to 600W (PBTL Mono).
Comparing the THD data (according to data sheet) of TPA3251 and TPA3255 shows that the TPA3255 into 8 Ohms provides same/better values than the TPA3251 into 4 Ohms. It compares with a 4 ohm load, slightly higher values arise...
Based on the "shrink"mod Board this TPA3251 amplifier variant in an aluminium casing, which also serves the heat dissipation was created.
Many inexpensive electronic circuits from the far East (mainly China) containing capacitors with unknown or little or no appropriate operating parameters, dubious origin or partly subject to fake / fakes / imitations of well-known brands. Here is a list.
