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Tuesday, April 16, 2013
Pest Repeller Circuit
The two timers in the bug repeller have some interesting characteristics. Roth of them have their thresholds externally set; the oscillator on the left
LM139J
MPC508AP
MAX668EUB
MAX695CWE
L4978D
LM3578AM
LM380N
LM2574M-ADJ
DAC0800LCN
AT45DB041D-SU
has a 50% duty cycle and the oscillator on the right acts as a VCO.
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