Function generator (CB7594E)

Found in a 90s 73 magazine for radio amateurs, this circuit makes use of common operational amplifiers.

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Full wave dimmer (CB7208E)
Found in Motorola's 1965 manual, this full-wave dimmer controls a load that depends on the used...
Linear Summing and Differentiating Circuits (CB20147E)
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Digital Windshield Wiper Timer (CB24567E)
This sophisticated circuit was found in the November 1978 issue of Radio Electronics magazine. Based on...