Used in the project subsonic bass filter project other filter circuit according to the more advanced input signal level adjustment, bass boost (low bass tones upgrade), 15Hz-55Hz and 40-150Hz frequency adjustment can be made circuit TL072 op amp built on. Able to control the 10-band equalizer circuit tl074 op amp circuit built on a different version of the filter circuit in addition there Subsonic Bass.
Source: forosdeelectronica.com/f16/crossover-3-vias-activo-mas-equalizador-3415/ alternative link:
FILE DOWNLOAD LINK LIST (in TXT format): LINKS-19524.zip
Published: 2012/08/20 Tags: audio control circuits
Battery Alarm Circuit for Model Helicopters ATtiny13
ATTINY13 Atmel microcontroller installed on the circuit model helicopter is checking the voltage of the battery the battery (or battery) voltage circuit when the level set LEDs, buzzer, giving the alam. ATTINY13 PB2, PB1, and PB0 pin chassis yaplılarak short circuit between the alarm can be set at a certain voltage circuit has very little material, if prepared pcb printed circuit board with SMD components becomes much smaller.
Battery alarm for model helicopters
Pdf please
Sub sonic pdf please