Balance Controlled Microphone Preamplifier Circuit (+3 Band Equaliser)
Circuit TL072 op-amp based on the second one 9 volt battery is fed with DC rectifier and regulator circuit on the 15 volt DC Adapter can be used with optional low noise, I suggest using the battery can not... Electronics Projects, Balance Controlled Microphone Preamplifier Circuit (+3 Band Equaliser) "audio control circuits, " Date 2019/08/02
Circuit TL072 op-amp based on the second one 9 volt battery is fed with DC rectifier and regulator circuit on the 15 volt DC Adapter can be used with optional low noise, I suggest using the battery can not be over-current circuit
Balanced input for microphone
Balanced and unbalanced output
Level control
3-band equaliser
Runs from battery, plugpack or phantom power
Battery indicator
Ground lift
Rugged diecast housing
Microphone Preamplifier of EQ
Source: http://www.siliconchip.com.au/cms/A_102159/article.html
Microphone Preamplifier PCB schematic alternative link:
FILE DOWNLOAD LINK LIST (in TXT format): LINKS-2598.zip
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