Posts Tagged ‘lm390’

LM390 MiNi Intercom

Here is Intercom circuit,It Very easy Circuit. Use IC LM390 for Amplifier Sound Form Speaker or Mic.
Control S1a change Talk and Listen.
See to Detail in Circuit.

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Intercom
LM390 MiNi Intercom

LM390 power Amplifier OTL 1W

This be mini power amplifier OTL 1watt. By use the integrated circuit LM390. Be pillar equipment perform enlarge sound signal gives the power goes up. For apply to 4ohm loudspeakers convenient for electronics small-sized circuit. That use Voltage Supply just 6Volt request a friend has fun Small Amplifier , please sir.

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