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This circuit is intended to indicate the power output level of any audio amplifier. It is simple, portable, and displays three power levels that can be set to any desired value. For a standard HiFi stereo power amplifier like the 25W MosFet Audio Amplifier described in these pages, the power output values suggested are as [...]
When testing circuits with a logic probe, it is sometimes difficult to watch the LEDS on the probe to determine the logic state. With this probe the logic states are audible. This probe is designed for TTL circuits only but could be modified for CMOS. ………….
Read more : Audible Logic Probe
Windows Comparator by IC LM339
This be Windows Comparator circuit. By use IC LM339 perform be IC Comparator. check compare with Voltage input by show with LED1…….
Read more : Windows Comparator by IC LM339
