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Heathkit Cointrack GD-1190 metal detector schematic diagram

IC3: CA3130 (BiMOS Operational Amplifier) IC4: CD4011 (Quad 2-Input NAND) IC5: CD4024 (7-Stage Ripple Carry Binary Counter) Transistors: Q1: 2N4117 (N-channel JFET transistor) Q2, Q4: MPSA20 (NPN 40V 100mA TO-92) Q3, Q6: MPSA55 (PNP 60V 500mA TO-92) Q5: MPSA13 (NPN Darlington Transistor) Diodes: D1: MV2110 (30V Vrrm, 39pf Varactor Diode)

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CA3130, CA3130A

3-66 Electrical Speciﬁcations Typical Values Intended Only for Design Guidance, VSUPPLY = ±7.5V, TA = 25oC Unless Otherwise Speciﬁed PARAMETER SYMBOL TEST CONDITIONS CA3130, CA3130A UNITS Input Offset Voltage Adjustment Range 10kΩ Across Terminals 4 and 5

Heathkit Groundtrack GR-1290 metal detector schematic diagram

It had a diameter of around 15cm (6 inch). A larger (30cm, 12inch) coil can be made using the following data: L1 = 300mm diameter, 90 turns, .4mm wire. L2 = 140mm diameter, 90 turns, .4mm wire. L3 = 130mm diameter, 550 turns, .1mm wire. See also: Heathkit Cointrack Gd-1190 Metal Locator. Heathkit GD-48 metal detector schematic.

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06-05-2021· I've been thinking it might be interesting to try to make a metal detector using an Arduino, and it seems like a VLF sensor would be the best way to go; outputting signal at ~10KHz should be feasible. My question is, what would be the best way to go about making the actual sensor? I know that the general design is two concentric loops of wire, with signal being 'written' to the outer one and ...

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heathkit metal detector ca3130 [] Discrimination experiments with the U.S. Army's standard [4] Modern metal detectors can achieve the necessary sensitivity to detect buried low metallic (LM) content land mines (so-called plastic land mines) that contain only a few grams of metal [Riggs, 1999].

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Metal detector circuit diagrams and projects

10-11-2009· Jun 27, 2010. -7. Heathkit Groundtrack GR-1290 VLF metal detector circuit diagram and detector coil construction notes. Metal. Jun 27, 2010. -5. White's Surfmaster PI (pulse induction) metal detector schematic diagram. Metal.

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heathkit metal detector ca3130 - residentialpainterscoza. Vintage Metal Detector Forum: Heathkit GD-1190 Working on a off resonance Heathkit GD-1190 Has anybody ever used one Is the signal supposed to increase or drop off with a non ferrous target. 595-2047-01 Heathkit Manual Cointrack Locator Detector …

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Heathkit Cointrack GD-1190 metal detector schematic diagram

Electronics > Schematic diagrams > Metal detectors > Heathkit Cointrack GD-1190 Heathkit Cointrack GD-1190. Fig. 1: Heathkit Cointrack GD-1190 metal detector schematic diagram. Parts list ICs: IC1: LF211 (FET input voltage comparator IC) IC2: LM2902 (Quad Operational Amplifier) IC3: CA3130 …

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heathkit gr1290 metal detector gold - livingrailSchematic diagram of the Heathkit GR-1290 VLF metal detector Fig. 1: Heathkit GR-1290 VLF metal detector schemat