Stereo audio meter (CB8228E)

This indicator or VU meter for stereo amplifiers was found in a 90s Radio Electronics. The integrated circuit used is uncommon today.

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Function generator (CB7594E)
Found in a 90s 73 magazine for radio amateurs, this circuit makes use of common operational...
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We found this circuit in a Popular Electronics from the 90s. Transistors can be modern...
VCO with 4046 (CB25753E)
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